Isntree Hyper Vitamin C23 Serum

Isntree

Hyper Vitamin C23 Serum

face serum

Added Last edited

Fit by skin type

General, ingredient-based — not your personalized match.

Dry
47%
Combination (dry)
47%
Balanced
77%
Combination (oily)
93%
Oily
93%

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17
Ingredients
6
Benefits
2
Actives
Find Dupes

The Isntree Hyper Vitamin C23 Serum is a powerhouse of skincare, featuring a potent blend of 23% Pure Vitamin C, Vitamin E, and other beneficial ingredients to unveil radiant and revitalized skin. This serum goes beyond merely fading hyperpigmentation; it actively works to even out skin tone and combat signs of aging. The inclusion of Vitamin E enhances antioxidant protection, while panthenol contributes to strengthening the skin barrier, providing deep moisturization, and soothing the complexion. The formula is also enriched with Birch Juice, ensuring that hydration levels remain high, promoting skin health. Its lightweight and fast-absorbing texture facilitates the swift delivery of nutrients, ensuring that the active ingredients penetrate deep into the skin layers, making the Isntree Hyper Vitamin C23 Serum an essential addition to your skincare routine for a luminous and even complexion.

Key Insights

Benefits

6
Anti-Aging
Dark Spot Fading
Evens Skin Tone
Hydration
Oil Control
Soothing

Active Ingredients

2
Vitamin B5 (panthenol) Vitamin C

Full Ingredients

17 total
WATER ASCORBIC ACID Vitamin C PROPANEDIOL BETAINE 1,2-HEXANEDIOL POLYGLYCERIN-3 TROMETHAMINE ETHYL ETHER HYDROXYETHYL UREA BETULA PLATYPHYLLA JAPONICA JUICE ETHYLHEXYLGLYCERIN ADENOSINE DISODIUM EDTA PANTHENOL Vitamin B5 (panthenol) GARDENIA FLORIDA FRUIT EXTRACT DEXTRIN TOCOPHEROL

About Hyper Vitamin C23 Serum

Overview

Hyper Vitamin C23 Serum is a watery-light serum from Isntree. The formula is built mainly around hydration. The ingredient list runs to 17 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 Propanediol, Betaine and Polyglycerin-3, humectants that pull water into the upper layers of skin rather than sealing it there.

What the formula does

Hydration: High. Ingredients that pull and hold water in the upper layers of skin, and here that comes from Propanediol, Betaine, Polyglycerin-3 and Hydroxyethyl Urea.

Antioxidant support: Moderate. Ingredients that mop up free radicals from UV and pollution, and here that comes from Ascorbic Acid and Tocopherol.

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

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 barrier support, oil control, 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
  • No common irritants flagged in the list
  • No recognised malassezia (fungal acne) triggers

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 5 ingredients

    Attracts and locks in moisture to keep skin plump and dewy

  • Soothing 3 ingredients

    Calms redness, irritation, and inflammation for sensitive skin

  • Anti-Aging 2 ingredients

    Boosts collagen and cell turnover to reduce fine lines and wrinkles

  • Evens Skin Tone 2 ingredients

    Brightens and balances complexion for a more uniform appearance

  • Dark Spot Fading 1 ingredient

    Fades hyperpigmentation and evens out dark spots over time

  • Oil Control 1 ingredient

    Regulates sebum production to reduce shine and greasiness

Does not target

Anti-Acne Blackhead Reducing Pore Minimizer 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.

Water

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
Ascorbic Acid Vitamin C

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

Ascorbic acid

Anti-Aging Dark Spot Fading Evens Skin Tone
Propanediol

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

1,3-dihydroxypropane

Hydration
Betaine

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

Methanaminium, 1-carboxy-N,N,N-trimethyl-, hydroxide, inner salt

Hydration
Ethylhexylglycerin

11th 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
Adenosine

12th 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
Panthenol Vitamin B5 (panthenol)

14th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.

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

Hydration Soothing
Dextrin

16th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.

Dextrin

Oil Control
Tocopherol

17th 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

Formula analysis

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

Hydration High

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

Barrier support None

Lipids and repair signals that support skin barrier integrity

Antioxidant support Moderate

Ingredients that mop up free radicals from UV and pollution

Oil control None

Ingredients that moderate sebum or absorb shine

Brightening Moderate

Ingredients that act on uneven tone and post-inflammatory marks

Soothing Low

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 (2)

Supporting ingredients (15)

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

Water Propanediol Betaine 1,2-hexanediol Polyglycerin-3 Tromethamine Ethyl Ether Hydroxyethyl Urea Betula Platyphylla Japonica Juice Ethylhexylglycerin Adenosine Disodium Edta Gardenia Florida Fruit Extract Dextrin Tocopherol

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)
  • PHAs (gluconolactone)
  • Azelaic acid
  • Copper peptides
  • Bakuchiol
  • Niacinamide
  • Hyaluronic acid
  • Ceramides
  • Signal peptides
  • Panthenol
  • Sunscreen

Use with caution

  • Benzoyl peroxide

    Best kept to separate routines — one in the morning, one at night, or on alternate days.

  • Retinoids (retinol, retinal)

    Can be layered, but the combination raises the irritation risk. Go slowly.

  • AHAs (glycolic, lactic)

    Can be layered, but the combination raises the irritation risk. Go slowly.

  • BHA (salicylic acid)

    Can be layered, but the combination raises the irritation risk. Go slowly.

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)
No ingredient here is a recognised food source for malassezia.
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 17 ingredients on the label.

4
Solvent

Dissolves and carries everything else

4
Texture agent

Sets the thickness, spread and stability of the formula

3
Humectant

Draws water into the upper layers of skin

2
Active

Changes how skin behaves rather than how it feels

2
Antioxidant

Neutralises free radicals from UV and pollution

2
pH adjuster

Sets the acidity the formula needs to work

2
Plant extract

Botanical material, usually for antioxidants or scent

1
Chelator

Binds trace metals that would otherwise spoil the formula

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 Ascorbic Acid Active
Estimated level
5–20%
Confidence
Moderate — INCI order above the 1% line
Roles
Active, Antioxidant, pH adjuster

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

Ascorbic acid

Anti-Aging Dark Spot Fading Evens Skin Tone
12 scientific references
  • Drug Delivery, February 2021, pages 445-453
  • Journal of Cosmetic Dermatology, December 2020, pages 3, 262-3, 269
  • Journal of Oral and Maxillofacial Pathology, May-August 2020, pages 374-382
  • Journal of Cosmetic Dermatology, March 2020, pages 671-676
  • Journal of Clinical and Aesthetic Dermatology, July 2017 pages 14-17
  • Journal of Drugs in Dermatology, July 2016, pages 863-867
  • Clinical, Cosmetic, and Investigational Dermatology, September 2015, pages 463-470
  • Indian Dermatology Online Journal, April-June 2013, pages 143-146
  • AAPS PharmSciTech, July 2011, pages 917-923
  • Journal of Drugs in Dermatology, July 2008, Supplement, pages s2-s6
  • International Journal of Toxicology, Supplement 2, March 2005, pages 51-111
  • Skin Pharmacology and Physiology, July-August 2004, pages 200-206
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 Betaine Humectant
Estimated level
2–10%
Confidence
Moderate — INCI order above the 1% line
Roles
Humectant, Texture agent

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

Methanaminium, 1-carboxy-N,N,N-trimethyl-, hydroxide, inner salt

Hydration
5 scientific references
  • International Journal of Toxicology, 2018, pages 28S-46S
  • Food Science and Biotechnology, October 2017, pages 1391-1397
  • The Journal of Chemical Physics, June 2015, ePublication
  • The American Journal of Clinical Nutrition, September 2004, pages 539-549
  • Skin Research and Technology, February 2003, pages 50-58
5 1,2-hexanediol Solvent
Estimated level
under 1%
Confidence
Moderate — listed below the 1% line
Roles
Solvent

5th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.

6 Polyglycerin-3 Humectant
Estimated level
under 1%
Confidence
Moderate — listed below the 1% line
Roles
Humectant

6th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.

Triglycerol

7 Tromethamine pH adjuster
Estimated level
under 1%
Confidence
Moderate — listed below the 1% line
Roles
pH adjuster

7th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.

1,3-Propanediol, 2-amino-2-(hydroxymethyl)-

8 Ethyl Ether Solvent
Estimated level
under 1%
Confidence
Moderate — listed below the 1% line
Roles
Solvent

8th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.

Ethane, 1,1'-oxybis

9 Hydroxyethyl Urea Humectant
Estimated level
under 1%
Confidence
Moderate — listed below the 1% line
Roles
Humectant

9th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.

Urea, (2-Hydroxyethyl)-

10 Betula Platyphylla Japonica Juice Plant extract
Estimated level
under 1%
Confidence
Moderate — listed below the 1% line
Roles
Plant extract

10th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.

Betula Platyphylla Japonica Juice is the sap from the tree, Betula platyphylla japonica, Betulaceae

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

11th 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
12 Adenosine
Estimated level
under 1%
Confidence
Moderate — listed below the 1% line

12th 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
13 Disodium Edta Texture agent
Estimated level
under 1%
Confidence
Moderate — listed below the 1% line
Roles
Texture agent, Chelator

13th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.

Disodium dihydrogen ethylenediaminetetraacetate

14 Panthenol Active
Estimated level
under 1%
Confidence
Moderate — listed below the 1% line
Roles
Active

14th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.

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
15 Gardenia Florida Fruit Extract Plant extract
Estimated level
under 1%
Confidence
Moderate — listed below the 1% line
Roles
Plant extract

15th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.

Gardenia Florida Fruit Extract is an extract of the fruit of the Cape Jasmine, Gardenia Florida L., Rubiaceae

16 Dextrin Texture agent
Estimated level
under 1%
Confidence
Moderate — listed below the 1% line
Roles
Texture agent

16th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.

Dextrin

Oil Control
8 scientific references
  • Oil-Absorbing Ingredients
  • Help for Oily Skin
  • Salicylic Acid for Skin
  • How BHA Exfoliants Work
  • Which BHA Exfoliant is Right for Me?
  • Niacinamide Benefits: What Does Niacinamide Do for Skin?
  • The Best Toners for Oily Skin
  • The Best Moisturizers for Oily, Acne-Prone Skin
17 Tocopherol Antioxidant
Estimated level
under 1%
Confidence
Moderate — listed below the 1% line
Roles
Antioxidant

17th 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

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Frequently asked questions

What ingredients are in Hyper Vitamin C23 Serum?

WATER, ASCORBIC ACID, PROPANEDIOL, BETAINE, 1,2-HEXANEDIOL, POLYGLYCERIN-3, TROMETHAMINE, ETHYL ETHER, HYDROXYETHYL UREA, BETULA PLATYPHYLLA JAPONICA JUICE, ETHYLHEXYLGLYCERIN, ADENOSINE, DISODIUM EDTA, PANTHENOL, GARDENIA FLORIDA FRUIT EXTRACT, DEXTRIN, TOCOPHEROL.

What are the active ingredients in Hyper Vitamin C23 Serum?

ASCORBIC ACID, PANTHENOL.

How do I use Hyper Vitamin C23 Serum?

After cleansing the skin, and applying toner, dispense 2–3 drops and apply to the entire face, avoiding the eye and mouth areas. Gently pat for better absorption.

What skin types is Hyper Vitamin C23 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 Hyper Vitamin C23 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 Hyper Vitamin C23 Serum fungal acne safe?

No ingredient in this formula is a recognised food source for malassezia, the yeast behind fungal acne.

Can I use Hyper Vitamin C23 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 Hyper Vitamin C23 Serum fragrance free?

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

Does Hyper Vitamin C23 Serum contain alcohol?

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

Is Hyper Vitamin C23 Serum silicone free?

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

Does Hyper Vitamin C23 Serum contain essential oils?

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

Is Hyper Vitamin C23 Serum paraben free?

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

What can I layer with Hyper Vitamin C23 Serum?

It layers well with Vitamin C (L-ascorbic acid), PHAs (gluconolactone), Azelaic acid, Copper peptides, Bakuchiol, Niacinamide. Take more care combining it with Benzoyl peroxide, Retinoids (retinol, retinal), AHAs (glycolic, lactic), BHA (salicylic acid) — use them in separate routines or on alternate days.

When should I apply Hyper Vitamin C23 Serum?

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

How many ingredients does Hyper Vitamin C23 Serum have?

It lists 17 ingredients, of which 2 are recorded as actives.

Who makes Hyper Vitamin C23 Serum?

Isntree.

Brand
Isntree

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