Numbuzin No.6 Deep Sleep Mask Serum

Numbuzin

No.6 Deep Sleep Mask Serum

face serum

Added Last edited

Fit by skin type

General, ingredient-based — not your personalized match.

Dry
57%
Combination (dry)
57%
Balanced
78%
Combination (oily)
92%
Oily
92%

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39
Ingredients
6
Benefits
4
Actives
Find Dupes

The Numbuzin's No.6 Deep Sleep Mask Serum is the ultimate solution for tired and dull skin. This serum-like texture mask is designed to be used overnight, allowing it to deeply hydrate and nourish your skin as you sleep. The high concentration of glacier water in its formula replenishes and revitalizes your skin, leaving you with a radiant complexion come morning.

Key Insights

Benefits

6
Anti-Aging
Dark Spot Fading
Evens Skin Tone
Hydration
Pore Minimizer
Soothing

Active Ingredients

4
AHA Hyaluronic acid Vitamin B3 (niacinamide) Vitamin B5 (panthenol)

About No.6 Deep Sleep Mask Serum

Overview

No.6 Deep Sleep Mask Serum is a watery-light serum from Numbuzin, a brand based in Korean. The formula is built mainly around hydration and soothing. The ingredient list runs to 39 ingredients, each broken down in full below.

Texture and finish

By its ingredient list the formula reads as very light — essentially a water-and-humectant base with little emollient weight. With almost no emollient load it should absorb quickly and finish close to matte. Hydration is handled by Butylene Glycol, Propanediol and Glycerin, humectants that pull water into the upper layers of skin rather than sealing it there.

What the formula does

Hydration: Very high. Ingredients that pull and hold water in the upper layers of skin, and here that comes from Butylene Glycol, Propanediol, Glycerin and Sodium Hyaluronate.

Soothing: High. Ingredients aimed at visible redness and reactivity, and here that comes from Panthenol, Niacinamide, Chlorella Vulgaris Extract and Xylitylglucoside.

Brightening: Moderate. Ingredients that act on uneven tone and post-inflammatory marks, and here that comes from Niacinamide, Dipotassium Glycyrrhizate and Tocopherol.

Barrier support: Moderate. Lipids and repair signals that support skin barrier integrity, and here that comes from Niacinamide and Panthenol.

Who it suits

On richness alone it suits Combination (oily) and Oily skin best, and is the least natural fit for Dry and Combination (dry) skin. Nothing in the list is flagged as a common irritant, which is a reasonable starting point for reactive skin — though a patch test is still the only way to know.

What it does not target

The formula contributes little or nothing on antioxidant protection, cell renewal and firmness signalling. That is not a fault — most products are not meant to do everything — but if one of those is your priority, this is not the product that will address it.

What is not in it

Reading the full list, the formula is fragrance-free, essential-oil-free, no drying alcohol, paraben-free, silicone-free and microplastic-free. Those claims come from the ingredient list itself, not from the packaging.

Where it fits in a routine

It can be used morning and evening. In a routine it goes after toner, before moisturiser. Apply to clean, dry skin and give it a minute to absorb before the next layer. Introduce one new treatment at a time so you can identify what is working.

This summary is generated from the product's ingredient list. It is not a review, it is not the brand's own marketing claims, and it does not replace advice from a dermatologist.

Pros and cons

Drawn purely from the ingredient list

Pros

  • No fragrance or declared allergens
  • No essential oils
  • No drying alcohol
  • Silicone-free
  • No microplastics
  • Strong humectant content for hydration
  • Several soothing ingredients
  • No common irritants flagged in the list

Things to know

  • One ingredient could feed malassezia (fungal acne)

Which skin types it suits

Scored on how rich or light the formula reads from its INCI order.

Suitable for

  • Combination (oily) skin
  • Oily skin

May suit

  • Balanced skin

Less suitable for

  • Dry skin
  • Combination (dry) skin

Sensitive skin

No ingredient in this formula carries a common-irritant flag, making it a reasonable option for reactive skin. A patch test is still recommended, as individual skin reactivity varies.

Skin concerns

Based on the curated benefits documented for this product's ingredients.

Helps with

  • Hydration 22 ingredients

    Attracts and locks in moisture to keep skin plump and dewy

  • Anti-Aging 11 ingredients

    Boosts collagen and cell turnover to reduce fine lines and wrinkles

  • Soothing 11 ingredients

    Calms redness, irritation, and inflammation for sensitive skin

  • Dark Spot Fading 1 ingredient

    Fades hyperpigmentation and evens out dark spots over time

  • Evens Skin Tone 1 ingredient

    Brightens and balances complexion for a more uniform appearance

  • Pore Minimizer 1 ingredient

    Tightens and refines the look of enlarged pores

Does not target

Anti-Acne Blackhead Reducing Oil Control Smooths Bumpy Skin

None of the ingredients in this formula are associated with these benefits. This is not unusual, as most products are designed to target a limited number of concerns.

Key ingredients

The actives, UV filters and benefit-carrying ingredients in this formula, in the order they are listed.

1st on the list, which puts it at an estimated 30–80% of the formula.

Aqua (EU),Deionized Water,Distilled Water,Micromatrix Fractile AN,Onsen-Sui (JPN),Purified Water

Hydration

2nd on the list, which puts it at an estimated 5–20% of the formula.

Butane-1,3-diol (CAS No. 107-88-0/ EC No. 203-529-7) (R)-(-)-butane-1,3-diol” (CAS No. 6290-03-5/ EC No. 228-532-0)

Hydration

3rd on the list, which puts it at an estimated 5–20% of the formula.

1,3-dihydroxypropane

Hydration

4th on the list, which puts it at an estimated 2–10% of the formula.

Glycerine ;Glycerol (INN); Glycerol (RIFM); Glycerolum (EP); Glycyl Alcohol; 1,2,3-Propanetriol; 1,2,3-Trihydroxypropane

Hydration Anti-Aging
Niacinamide Vitamin B3 (niacinamide)

5th on the list, which puts it at an estimated 2–10% of the formula.

Niacinamide (vitamin B3) is a gentle skincare active that repairs the skin barrier, calms redness, controls oil and evens tone at 2–5%. Official IUPAC name: **3-Pyridinecarboxamide**

Soothing Anti-Aging Pore Minimizer

7th on the list, which puts it at an estimated 1–5% of the formula.

Chlorella Vulgaris Extract is an extract of the Alga, Chlorella vulgaris, Oocystaceae

Soothing Hydration

8th on the list, which puts it at an estimated 1–5% of the formula.

Xylitylglucoside

Hydration Soothing
Sodium Hyaluronate Hyaluronic acid

9th on the list, which puts it at an estimated 1–5% of the formula.

Hyaluronic acid, sodium, salt

Hydration Anti-Aging Soothing

10th on the list, which puts it at an estimated 1–5% of the formula.

Hydrolyzed Hyaluronic Acid is the hydrolysate of Hyaluronic Acid derived by acid, enzyme or other method of hydrolysis

Hydration

11th on the list, which puts it at an estimated 1–3% of the formula.

Xylitol

Hydration Soothing

12th on the list, which puts it at an estimated 1–3% of the formula.

Melia Azadirachta Leaf Extract is an extract of the leaves of the Neem Tree, Melia azadirachta L., Meliaceae

Anti-Aging

13th on the list, which puts it at an estimated 1–3% of the formula.

Melia Azadirachta Flower Extract is an extract of the flowers of the Neem Tree, Melia Azadirachta L., Meliaceae

Anti-Aging

Formula analysis

Each axis is scored from the ingredients present and how high up the list they sit.

Hydration Very high

Ingredients that pull and hold water in the upper layers of skin

Barrier support Moderate

Lipids and repair signals that support skin barrier integrity

Antioxidant support None

Ingredients that mop up free radicals from UV and pollution

Oil control Low

Ingredients that moderate sebum or absorb shine

Brightening Moderate

Ingredients that act on uneven tone and post-inflammatory marks

Soothing High

Ingredients aimed at visible redness and reactivity

Cell renewal None

Retinoids, acids and enzymes that speed surface turnover

Firmness signalling None

Peptides and growth factors that signal for collagen support

Active and supporting ingredients

"Active" here means an ingredient carrying a recorded active type or a recognised UV filter.

Active ingredients (7)

Supporting ingredients (32)

Solvents, emollients, texture agents and preservatives — the formula that carries the actives.

Water Butylene Glycol Propanediol Glycerin Pigment Yellow 12 Chlorella Vulgaris Extract Xylitylglucoside Xylitol Melia Azadirachta Leaf Extract Melia Azadirachta Flower Extract Coccinia Indica Fruit Extract Aloe Barbadensis Flower Extract Solanum Melongena Fruit Extract Ocimum Sanctum Leaf Extract Corallina Officinalis Extract Curcuma Longa Root Extract Glycereth-26 Pentylene Glycol Glucose Sodium PCA Anhydroxylitol Fructooligosaccharides Fructose Polyglyceryl-10 Laurate Sodium Citrate Dipotassium Glycyrrhizate Ethylhexylglycerin Adenosine Hydrolyzed Glycosaminoglycans Neryl Propionate Tocopherol Xanthan Gum

What is and is not in it

Read from the full ingredient list. A brand's own claim may differ.

Free from

  • Fragrance-free
  • Essential-oil-free
  • No drying alcohol
  • Paraben-free
  • Silicone-free
  • Microplastic-free
  • Sulfate-free
  • Dye-free
  • Oil-free
  • No animal-derived ingredients

What to layer it with

Judged by the same curated rules our routine checker uses. It reads the ingredients, not the label.

Compatible with

  • Vitamin C (L-ascorbic acid)
  • Retinoids (retinol, retinal)
  • AHAs (glycolic, lactic)
  • BHA (salicylic acid)
  • PHAs (gluconolactone)
  • Benzoyl peroxide
  • Azelaic acid
  • Copper peptides
  • Bakuchiol
  • Niacinamide
  • Hyaluronic acid
  • Ceramides
  • Signal peptides
  • Panthenol
  • Sunscreen

Nothing in this formula belongs to a group our rules can put in conflict, so it layers freely. Order still matters — thinnest texture first.

Where it fits in a routine

Morning Evening
  1. Cleanse
  2. Toning
  3. Treat
  4. Moisturise
  5. Protect

This product is the "Treat" step.

  • Apply to clean, dry skin and give it a minute to absorb before the next layer.
  • Introduce one new treatment at a time so you can identify what is working.

Safety and suitability

Flags to check, not verdicts. None of this is medical advice — if you are pregnant, breastfeeding or treating a skin condition, ask a doctor.

Pregnancy and breastfeeding
Nothing in this formula is on the standard pregnancy-caution list. That is not clearance — ask your doctor about anything you use daily.
Fungal acne (malassezia)
1 ingredient could feed malassezia: Polyglyceryl-10 Laurate. That is about the yeast's food supply, not a prediction that you will break out.
Sensitive and reactive skin
No ingredient in this formula carries a common-irritant flag, making it a reasonable option for reactive skin. A patch test is still recommended, as individual skin reactivity varies.

Ingredients by function

Most ingredients do more than one job, so these counts add up to more than the 39 ingredients on the label.

16
Humectant

Draws water into the upper layers of skin

9
Plant extract

Botanical material, usually for antioxidants or scent

7
Active

Changes how skin behaves rather than how it feels

5
Solvent

Dissolves and carries everything else

5
Texture agent

Sets the thickness, spread and stability of the formula

2
Chelator

Binds trace metals that would otherwise spoil the formula

2
pH adjuster

Sets the acidity the formula needs to work

1
Antioxidant

Neutralises free radicals from UV and pollution

1
Emollient

Softens and smooths by filling gaps between skin cells

1
Occlusive

Forms a film that slows water loss

1
Surfactant

Lifts oil and dirt, or holds oil and water together

Ingredient breakdown

Every ingredient on the label, in order, with what it does and roughly how much of it is likely to be there.

1 Water Solvent
Estimated level
30–80%
Confidence
Moderate — INCI order above the 1% line
Roles
Solvent

1st on the list, which puts it at an estimated 30–80% of the formula.

Aqua (EU),Deionized Water,Distilled Water,Micromatrix Fractile AN,Onsen-Sui (JPN),Purified Water

Hydration
3 scientific references
  • Skin Research and Technology, May 2015, pages 131-136
  • Skin Pharmacology and Applied Skin Physiology, November-December 1999, pages 344-351
  • Journal of Cosmetic Science, September-October 1993, pages 249-262
2 Butylene Glycol Humectant
Estimated level
5–20%
Confidence
Moderate — INCI order above the 1% line
Roles
Humectant, Texture agent, Solvent

2nd on the list, which puts it at an estimated 5–20% of the formula.

Butane-1,3-diol (CAS No. 107-88-0/ EC No. 203-529-7) (R)-(-)-butane-1,3-diol” (CAS No. 6290-03-5/ EC No. 228-532-0)

Hydration
5 scientific references
  • CosmeticsInfoorg, Accessed March 2021, ePublication
  • US Food and Drug Administration Code of Federal Regulations</em>, Accessed March 2021, ePublication
  • International Journal of Toxicology, May 2011, pages 5S-16S
  • Skin Research and Technology, November 2007, pages 417-24
  • Journal of the American College of Toxicology, September 1985, pages 223-248
3 Propanediol Texture agent
Estimated level
5–20%
Confidence
Moderate — INCI order above the 1% line
Roles
Texture agent, Solvent

3rd on the list, which puts it at an estimated 5–20% of the formula.

1,3-dihydroxypropane

Hydration
4 scientific references
  • PubChem Compound Summary, April 2021, ePublication
  • SpecialChem, Accessed April 2021, ePublication
  • Cosmetic Ingredient Review, June 2018, pages 1-73
  • Cosmetics & Toiletries, May 2013, pages 81-86
4 Glycerin Humectant
Estimated level
2–10%
Confidence
Moderate — INCI order above the 1% line
Roles
Humectant, Occlusive, Texture agent, Solvent

4th on the list, which puts it at an estimated 2–10% of the formula.

Glycerine ;Glycerol (INN); Glycerol (RIFM); Glycerolum (EP); Glycyl Alcohol; 1,2,3-Propanetriol; 1,2,3-Trihydroxypropane

Hydration Anti-Aging
6 scientific references
  • Journal of Pharmaceutical Investigation, March 2021, pages 223-231
  • International Journal of Toxicology, November/December 2019, Volume 38, Supplement 3, pages 6S-22S
  • International Journal of Cosmetic Science, August 2016, ePublication
  • British Journal of Dermatology, July 2008, pages 23-34
  • Journal of Cosmetic Dermatology, June 2007, pages 75-82
  • Proceedings of the National Academy of Sciences, June 2003, pages 7, 360-7, 365
5 Niacinamide Active
Estimated level
2–10%
Confidence
Moderate — INCI order above the 1% line
Roles
Active

5th on the list, which puts it at an estimated 2–10% of the formula.

Niacinamide (vitamin B3) is a gentle skincare active that repairs the skin barrier, calms redness, controls oil and evens tone at 2–5%. Official IUPAC name: **3-Pyridinecarboxamide**

Soothing Anti-Aging Pore Minimizer
15 scientific references
  • International Journal of Dermatology, February 2021, pages 166-173
  • Biomolecules & Therapeutics, July 2019, pages 562-569
  • Experimental Dermatology, February 2019, pages 15-22
  • Dermatologic Therapy, September 2017, ePublication
  • Journal of Investigative Dermatology, May 2017, page S116
  • International Journal of Pharmaceutics, March 2017, pages 158-162
  • Facial Plastic Surgery Clinics of North America, May 2016, pages 145-152
  • Clinical, Cosmetic, and Investigational Dermatology, July 2015, pages 405-412
  • Skin Pharmacology and Physiology, June 2014, pages 311-315
  • International Journal of Pharmacy, January 2013, pages 192-201
  • Dermatoendrocrinology, July 2012, pages 308-319
  • International Journal of Toxicology, September 2005, pages 1-31
  • Dermatologic Surgery, July 2005, pages 860-865
  • International Journal of Cosmetic Science, October 2004, pages 231-238
  • Journal of Cosmetic Dermatology, April 2004, pages 88-93
Estimated level
2–10%
Confidence
Moderate — INCI order above the 1% line

6th on the list, which puts it at an estimated 2–10% of the formula.

2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-oxo-N-phenylbutyramide] (CI 21090)

Estimated level
1–5%
Confidence
Moderate — INCI order above the 1% line
Roles
Plant extract

7th on the list, which puts it at an estimated 1–5% of the formula.

Chlorella Vulgaris Extract is an extract of the Alga, Chlorella vulgaris, Oocystaceae

Soothing Hydration
3 scientific references
  • Marine Drugs, August 2021, pages 1-16
  • IOP Conference Series: Materials Science and Engineering, January 2021, pages 1-9
  • Journal of Applied Phycology, June 2019, pages 3, 653-3, 663
8 Xylitylglucoside Humectant
Estimated level
1–5%
Confidence
Moderate — INCI order above the 1% line
Roles
Humectant

8th on the list, which puts it at an estimated 1–5% of the formula.

Xylitylglucoside

Hydration Soothing
Estimated level
1–5%
Confidence
Moderate — INCI order above the 1% line
Roles
Humectant, Active

9th on the list, which puts it at an estimated 1–5% of the formula.

Hyaluronic acid, sodium, salt

Hydration Anti-Aging Soothing
5 scientific references
  • Der Hautarzt; Zeitschrift fur Dermatologie, Venerologie, und Verwandte Gebiete, December 2017, pages 987-993
  • Journal of Cosmetic Dermatology, July 2014, pages 277-287
  • Journal of Clinical and Aesthetic Dermatology, October 2012, pages 20-23
  • DermatoEndocrinology, July-December 2012, pages 253-258
  • Journal of Drugs in Dermatology, September 2011, pages 990-1000
Estimated level
1–5%
Confidence
Moderate — INCI order above the 1% line
Roles
Humectant, Active

10th on the list, which puts it at an estimated 1–5% of the formula.

Hydrolyzed Hyaluronic Acid is the hydrolysate of Hyaluronic Acid derived by acid, enzyme or other method of hydrolysis

Hydration
11 Xylitol Humectant
Estimated level
1–3%
Confidence
Moderate — INCI order above the 1% line
Roles
Humectant

11th on the list, which puts it at an estimated 1–3% of the formula.

Xylitol

Hydration Soothing
7 scientific references
  • Microorganisms, January 2021, pages 1–14
  • Clinical, Cosmetic, and Investigational Dermatology, May 2019, pages 323-331
  • Advances in Nutrition, January 2019, Supplement, pages S31-S48
  • Experimental Dermatology, March 2018, pages 280-284
  • International journal of Applied Pharmaceutical and Biological Research, 2017, pages 67-73
  • Acta-dermato venereological, February 2017, pages 182-187
  • https://wwwcir-safetyorg/sites/default/files/Mannitol, %20Sorbitol, %20Xylitol_0pdf
Estimated level
1–3%
Confidence
Moderate — INCI order above the 1% line
Roles
Plant extract

12th on the list, which puts it at an estimated 1–3% of the formula.

Melia Azadirachta Leaf Extract is an extract of the leaves of the Neem Tree, Melia azadirachta L., Meliaceae

Anti-Aging
8 scientific references
  • 5 Super Anti-Aging Antioxidants Your Skin Needs
  • How to Keep Your Neck & Chest Looking Young
  • Acne & Aging Skin
  • How to Diminish Uneven Skin Tone and Get Your Glow Back
  • What Are Peptides and What Do They Do for Skin?
  • The Truth About Firming Creams
  • Top 5 Reasons to Add Antioxidants to Your Skin Care Routine
  • Anti-Aging Superstars
Estimated level
1–3%
Confidence
Moderate — INCI order above the 1% line
Roles
Plant extract

13th on the list, which puts it at an estimated 1–3% of the formula.

Melia Azadirachta Flower Extract is an extract of the flowers of the Neem Tree, Melia Azadirachta L., Meliaceae

Anti-Aging
Estimated level
1–3%
Confidence
Moderate — INCI order above the 1% line
Roles
Plant extract

14th on the list, which puts it at an estimated 1–3% of the formula.

Coccinia Indica Fruit Extract is an extract of the fruit of Coccinia indica, Cucurbitaceae

Estimated level
1–3%
Confidence
Moderate — INCI order above the 1% line
Roles
Emollient, Plant extract

15th on the list, which puts it at an estimated 1–3% of the formula.

Aloe Barbadensis Flower Extract is an extract of the flowers of the aloe, Aloe barbadensis, Liliaceae

Estimated level
1–3%
Confidence
Moderate — INCI order above the 1% line
Roles
Plant extract

16th on the list, which puts it at an estimated 1–3% of the formula.

Solanum Melogena Fruit Extract is an extract of the fruit of the Eggplant, Solanum melongena L., Solanaceae

Anti-Aging
Estimated level
1–3%
Confidence
Moderate — INCI order above the 1% line
Roles
Plant extract

17th on the list, which puts it at an estimated 1–3% of the formula.

Ocimum Sanctum Leaf Extract is an extract of the leaves of Ocimum sanctum, Labiatae

Estimated level
1–3%
Confidence
Moderate — INCI order above the 1% line
Roles
Plant extract

18th on the list, which puts it at an estimated 1–3% of the formula.

Corallina Officinalis Extract is an extract of the Alga, Corallina officinalis L., Corallinaceae

Hydration Anti-Aging
8 scientific references
  • Supercharged Hydration
  • How Hyaluronic Acid Benefits Skin
  • What is Dehydrated Skin & How to Choose the Best Products
  • What Your Moisturizer Must Contain
  • Moisturizer Myths You Should Stop Believing Now
  • The Benefits of Glycerin in Skin Care
  • The Best Face Oils for Skin
  • How Facial Oils Help Skin
Estimated level
1–3%
Confidence
Moderate — INCI order above the 1% line
Roles
Plant extract

19th on the list, which puts it at an estimated 1–3% of the formula.

Curcuma Longa Root Extract is an extract of the rhizomes of the Turmeric, Curcuma longa L., Zingiberaceae

20 Hyaluronic Acid Humectant
Estimated level
1–3%
Confidence
Moderate — INCI order above the 1% line
Roles
Humectant, Active

20th on the list, which puts it at an estimated 1–3% of the formula.

Hyaluronic acid

Anti-Aging Hydration
5 scientific references
  • Journal of Evidence-Based, Complementary and Alternative Medicine, October 2017, pages 816-823
  • Journal of Medicinal Food, October 2016, pages 1, 172-1, 179
  • Nutrition Journal, July 2013, ePublication
  • Journal of Drugs in Dermatology, 2011, issue 9, pages 990-1000
  • Journal of Clinical and Aesthetic Dermatology, March 2009, pages 38-43
21 Glycereth-26 Humectant
Estimated level
1–3%
Confidence
Moderate — INCI order above the 1% line
Roles
Humectant, Texture agent

21st on the list, which puts it at an estimated 1–3% of the formula.

Poly(oxy-1,2-ethanediyl)], .alpha.,.alpha.',.alpha.''-1,2,3-propanetriyltris[.omega.-hydroxy-

Hydration
2 scientific references
  • Nanomedicine: Nanotechnology, Biology and Medicine, February 2020, ePublication
  • Cosmetic Ingredient Review, March 2019, pages 1-11
22 Panthenol Active
Estimated level
1–3%
Confidence
Moderate — INCI order above the 1% line
Roles
Active

22nd on the list, which puts it at an estimated 1–3% of the formula.

Butanamide, 2,4-dihydroxy-N-(3-hydroxypropyl)-3,3-dimethyl-, (2R)-; dl-Panthenol

Hydration Soothing
7 scientific references
  • The Linus Pauling Institute, Oregon State University, Accessed April 2021, ePublication
  • International Journal of Cosmetic Science, December 2019, pages 534-547
  • Journal of Cosmetic Dermatology, January 2019, pages 346-354
  • Cosmetic Ingredient Review, March 2018, pages 1-51
  • The Journal of Dermatological Treatment, August 2017, pages 173-180
  • Journal of Cosmetic Science, August 2011, pages 361-370
  • American Journal of Clinical Dermatology, Volume 3, 2002, pages 427-433
Estimated level
1–3%
Confidence
Moderate — INCI order above the 1% line
Roles
Solvent

23rd on the list, which puts it at an estimated 1–3% of the formula.

1,2-Dihydroxypentane

Hydration
4 scientific references
  • https://thedermreviewcom/pentylene-glycol/
  • Regulatory Toxicology and Pharmacology, July 2017, pages 106-111
  • Prospector, June 2015, ePublication
  • International Journal of Toxicology, October 2012, pages 147S-168S
24 Glucose Humectant
Estimated level
1–3%
Confidence
Moderate — INCI order above the 1% line
Roles
Humectant

24th on the list, which puts it at an estimated 1–3% of the formula.

Glucose

Hydration
4 scientific references
  • International Journal of Molecular Sciences, March 2020, pages 1–13
  • Foods, March 2019, pages 1–27
  • Nature Medicine, May 2018, pages 617–627
  • Clinical Chemistry and Laboratory Medicine, September 2003, pages 1, 224–1, 228
25 Sodium PCA Humectant
Estimated level
1–3%
Confidence
Moderate — INCI order above the 1% line
Roles
Humectant

25th on the list, which puts it at an estimated 1–3% of the formula.

Sodium 5-oxo-2-pyrrolidinecarboxylate

Hydration Soothing
4 scientific references
  • International Journal of Toxicology, September 2019, ePublication
  • Journal of Cosmetic Dermatology, April 2018, pages 138-144
  • IFSCC Conference 2005 Research Paper
  • Bio-Medical Materials and Engineering, 1995, pages 9-20
26 Anhydroxylitol Humectant
Estimated level
1–3%
Confidence
Moderate — INCI order above the 1% line
Roles
Humectant

26th on the list, which puts it at an estimated 1–3% of the formula.

D-Xylitol, 1,4-Anhydro-

Hydration
Estimated level
1–3%
Confidence
Moderate — INCI order above the 1% line
Roles
Humectant

27th on the list, which puts it at an estimated 1–3% of the formula.

Fructooligosaccharides are oligosaccharides produced enzymatically from sugar beets and consist chiefly of kestose, nystose and fructosyl nystose

Hydration
28 Fructose Humectant
Estimated level
1–3%
Confidence
Moderate — INCI order above the 1% line
Roles
Humectant

28th on the list, which puts it at an estimated 1–3% of the formula.

Fructose

Hydration
Estimated level
1–3%
Confidence
Moderate — INCI order above the 1% line

29th on the list, which puts it at an estimated 1–3% of the formula.

1,2,3-Propanetriol, homopolymer, dodecanoates (1:1) (10 mol glycerol average molar ratio)

30 Sodium Citrate Chelator
Estimated level
1–3%
Confidence
Moderate — INCI order above the 1% line
Roles
Chelator, pH adjuster

30th on the list, which puts it at an estimated 1–3% of the formula.

Trisodium citrate

Estimated level
1–3%
Confidence
Moderate — INCI order above the 1% line
Roles
Humectant

31st on the list, which puts it at an estimated 1–3% of the formula.

.alpha.-d-Glucopyranosiduronic acid, (3.beta.,20.beta.)-20-carboxy-11-oxo-30-norolean-12-en-3-yl 2-O-.beta.-d-glucopyranuronosyl-, dipotassium salt

Soothing Dark Spot Fading
8 scientific references
  • How to Care for Red, Sensitive Skin
  • 7 Best Products for Sensitive Skin
  • Skincare Tips for Calming Redness
  • Skin-Soothing Ingredients
  • How the Paula’s Choice CALM Collection Works
  • The Best Moisturizers for Sensitive Skin
  • The Best Ways to Treat Acne and Sensitive Skin
  • Skin Care for Extremely Dry, Sensitive Skin
Estimated level
1–3%
Confidence
Moderate — INCI order above the 1% line
Roles
Humectant, Active

32nd on the list, which puts it at an estimated 1–3% of the formula.

Hyaluronic acid, sodium salt, polymer with 1,1'-sulfonylbis[ethene]

Hydration Anti-Aging Soothing
Estimated level
under 1%
Confidence
Moderate — listed below the 1% line

33rd on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.

1,2-Propanediol, 3-(2-ethylhexyloxy)

Hydration
5 scientific references
  • PLoS One, October 2016, ePublication
  • Contact Dermatitis, May 2016, pages 281-288
  • International Journal of Toxicology, September 2013, pages 5S-21S
  • Personal Care, 2008, pages 1-4
  • Cosmetic Science Technology, 2006, pages 1-11
Estimated level
under 1%
Confidence
Moderate — listed below the 1% line

34th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.

6-Amino-9-beta-D-ribofuranosyl-9H-purine

Soothing
8 scientific references
  • PubChem, Accessed May 2021, ePublication
  • Cosmetic Ingredient Review, September 2020, pages 1-38
  • Experimental Dermatology, August 2014, pages 553-554
  • Journal of Investigative Dermatology, August 2011, pages 526-546
  • International Journal of Cosmetic Science, December 2006, pages 447-451
  • British Journal of Pharmacology, October 2008, issue 4, pages 475-486
  • PloS One, May 2008 (ePublication)
  • >International Journal of Cosmetic Science, August 2006, pages 447-451
Estimated level
under 1%
Confidence
Moderate — listed below the 1% line
Roles
Humectant

35th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.

Glycosaminoglycans, hydrolyzed

Hydration Anti-Aging
8 scientific references
  • Supercharged Hydration
  • How Hyaluronic Acid Benefits Skin
  • What is Dehydrated Skin & How to Choose the Best Products
  • What Your Moisturizer Must Contain
  • Moisturizer Myths You Should Stop Believing Now
  • The Benefits of Glycerin in Skin Care
  • The Best Face Oils for Skin
  • How Facial Oils Help Skin
36 Citric Acid Active
Estimated level
under 1%
Confidence
Moderate — listed below the 1% line
Roles
Active, Chelator, pH adjuster

36th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.

2-Hydroxy-1,2,3-propanetricarboxylic acid

Estimated level
under 1%
Confidence
Moderate — listed below the 1% line

37th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.

cis-3,7-Dimethyl-2,6-octadienyl propanoate

38 Tocopherol Antioxidant
Estimated level
under 1%
Confidence
Moderate — listed below the 1% line
Roles
Antioxidant

38th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.

3,4-Dihydro-2,5,7,8-tetramethyl-2-(4,8,12-trimethyltridecyl)-2H-benzopyran-6-ol; .alpha.-tocopherol; Vitamin E

Anti-Aging Evens Skin Tone Soothing
4 scientific references
  • Journal or Agricultural and Food Chemistry, June 2010, pages 7013-7020
  • Journal of Investigative Dermatology, November 2001, pages 1212-1217
  • Canadian Family Physician, July 2006, pages 855-856
  • Dermatologic Surgery, April 1999, pages 311-315
39 Xanthan Gum Surfactant
Estimated level
under 1%
Confidence
Moderate — listed below the 1% line
Roles
Surfactant, Texture agent

39th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.

Xanthan gum

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Frequently asked questions

What ingredients are in No.6 Deep Sleep Mask Serum?

WATER, BUTYLENE GLYCOL, PROPANEDIOL, GLYCERIN, NIACINAMIDE, PIGMENT YELLOW 12, CHLORELLA VULGARIS EXTRACT, XYLITYLGLUCOSIDE, SODIUM HYALURONATE, HYDROLYZED HYALURONIC ACID, XYLITOL, MELIA AZADIRACHTA LEAF EXTRACT, MELIA AZADIRACHTA FLOWER EXTRACT, COCCINIA INDICA FRUIT EXTRACT, ALOE BARBADENSIS FLOWER EXTRACT, SOLANUM MELONGENA FRUIT EXTRACT, OCIMUM SANCTUM LEAF EXTRACT, CORALLINA OFFICINALIS EXTRACT, CURCUMA LONGA ROOT EXTRACT, HYALURONIC ACID, GLYCERETH-26, PANTHENOL, PENTYLENE GLYCOL, GLUCOSE, SODIUM PCA, ANHYDROXYLITOL, FRUCTOOLIGOSACCHARIDES, FRUCTOSE, POLYGLYCERYL-10 LAURATE, SODIUM CITRATE, DIPOTASSIUM GLYCYRRHIZATE, SODIUM HYALURONATE CROSSPOLYMER, ETHYLHEXYLGLYCERIN, ADENOSINE, HYDROLYZED GLYCOSAMINOGLYCANS, CITRIC ACID, NERYL PROPIONATE, TOCOPHEROL, XANTHAN GUM.

What are the active ingredients in No.6 Deep Sleep Mask Serum?

NIACINAMIDE, SODIUM HYALURONATE, HYDROLYZED HYALURONIC ACID, HYALURONIC ACID, PANTHENOL, SODIUM HYALURONATE CROSSPOLYMER, CITRIC ACID.

How do I use No.6 Deep Sleep Mask Serum?

After cleansing, prep the skin with toner. Dispense an appropriate amount and apply it over your face evenly.

What skin types is No.6 Deep Sleep Mask Serum good for?

Judged on how rich the formula reads from its ingredient list, it suits Combination (oily), Oily skin best. It is the least natural fit for Dry, Combination (dry) skin.

Is No.6 Deep Sleep Mask Serum good for sensitive skin?

No ingredient in this formula carries a common-irritant flag, making it a reasonable option for reactive skin. A patch test is still recommended, as individual skin reactivity varies.

Is No.6 Deep Sleep Mask Serum fungal acne safe?

One ingredient could feed malassezia: Polyglyceryl-10 Laurate. That describes the yeast's food supply, not a prediction that it will cause a breakout.

Can I use No.6 Deep Sleep Mask Serum while pregnant?

Nothing in this formula is on the standard pregnancy-caution list. That is not medical clearance — check anything you use daily with your doctor or midwife.

Is No.6 Deep Sleep Mask Serum fragrance free?

Yes. Reading the full ingredient list, this formula is fragrance-free.

Does No.6 Deep Sleep Mask Serum contain alcohol?

No. Reading the full ingredient list, this formula is no drying alcohol.

Is No.6 Deep Sleep Mask Serum silicone free?

Yes. Reading the full ingredient list, this formula is silicone-free.

Does No.6 Deep Sleep Mask Serum contain essential oils?

No. Reading the full ingredient list, this formula is essential-oil-free.

Is No.6 Deep Sleep Mask Serum paraben free?

Yes. Reading the full ingredient list, this formula is paraben-free.

What can I layer with No.6 Deep Sleep Mask Serum?

It layers well with Vitamin C (L-ascorbic acid), Retinoids (retinol, retinal), AHAs (glycolic, lactic), BHA (salicylic acid), PHAs (gluconolactone), Benzoyl peroxide.

When should I apply No.6 Deep Sleep Mask Serum?

Use it morning and evening, after toner, before moisturiser.

How many ingredients does No.6 Deep Sleep Mask Serum have?

It lists 39 ingredients, of which 7 are recorded as actives.

Who makes No.6 Deep Sleep Mask Serum?

Numbuzin, a brand based in Korean.

Brand
Numbuzin
Country
Korean

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