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
ISOI
Brightening Serum
face neck serum
ISOI
face neck serum
Added Last edited
Fit by skin type
General, ingredient-based — not your personalized match.
See how this fits your skin
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Take the skin testThe ISOI Brightening Serum is the best-selling product. It helps to improve uneven pigmentation, clarifies blemishes, and reduces dark spots with vitamin-rich Bulgarian rose oil, arbutin, and natural plant extracts. The serum also brightens and improves uneven skin tone, hydrates, and soothes redness.
Brightening Serum is a lightweight serum from ISOI. The formula is built mainly around hydration. The ingredient list runs to 36 ingredients, each broken down in full below.
By its ingredient list the formula reads as light: water and humectants lead, with emollients kept lower in the order. Hydration is handled by Glycerin, Betaine and Trehalose, humectants that pull water into the upper layers of skin rather than sealing it there.
Hydration: High. Ingredients that pull and hold water in the upper layers of skin, and here that comes from Glycerin, Betaine, Trehalose and Panthenol.
Soothing: Moderate. Ingredients aimed at visible redness and reactivity, and here that comes from Allantoin, Panthenol, Centella Asiatica Extract and Calendula Officinalis Flower Extract.
Brightening: Moderate. Ingredients that act on uneven tone and post-inflammatory marks, and here that comes from Arbutin, Glycyrrhiza Glabra Root Extract and Scutellaria Baicalensis Root Extract.
On richness alone it suits Balanced, 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.
The formula contributes little or nothing on barrier support, antioxidant protection, oil control and cell renewal. 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.
Reading the full list, the formula is no drying alcohol, paraben-free, silicone-free, microplastic-free, sulfate-free and dye-free. Those claims come from the ingredient list itself, not from the packaging. It does contain fragrance and essential oils, worth knowing if your skin reacts to any of them.
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.
Drawn purely from the ingredient list
Scored on how rich or light the formula reads from its INCI order.
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.
Based on the curated benefits documented for this product's ingredients.
Boosts collagen and cell turnover to reduce fine lines and wrinkles
Calms redness, irritation, and inflammation for sensitive skin
Attracts and locks in moisture to keep skin plump and dewy
Brightens and balances complexion for a more uniform appearance
Targets breakouts by reducing bacteria and unclogging pores
Fades hyperpigmentation and evens out dark spots over time
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.
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
3rd on the list, which puts it at an estimated 5–20% of the formula.
Glycerine ;Glycerol (INN); Glycerol (RIFM); Glycerolum (EP); Glycyl Alcohol; 1,2,3-Propanetriol; 1,2,3-Trihydroxypropane
5th on the list, which puts it at an estimated 2–10% of the formula.
4-Hydroxyphenyl-beta-D-glucopyranoside
6th on the list, which puts it at an estimated 2–10% of the formula.
Methanaminium, 1-carboxy-N,N,N-trimethyl-, hydroxide, inner salt
7th on the list, which puts it at an estimated 1–5% of the formula.
alpha-D-Glucopyranoside, alpha-D-glucopyranosyl
9th on the list, which puts it at an estimated 1–5% of the formula.
Hippophae Rhamnoides Fruit Extract is an extract of the fruit of the Sea Buckthorn, Hippophae rhamnoides L., Elaeagnaceae
10th on the list, which puts it at an estimated 1–5% of the formula.
Euterpe Oleracea Fruit Extract is an extract of the fruit of the Cabbage Palm, Euterpe oleracea, Arecaceae
12th on the list, which puts it at an estimated 1–3% of the formula.
Phyllanthus Emblica Fruit Extract is an extract of the fruit of Phyllanthus emblica L., Euphorbiaceae
13th on the list, which puts it at an estimated 1–3% of the formula.
Vaccinium Macrocarpon Extract is an extract of the fruit of the Cranberry, Vaccinium macrocarpon, Ericaceae
14th on the list, which puts it at an estimated 1–3% of the formula.
Rhodiola Rosea Root Extract is an extract of the roots of the Rhodiola rosea, Crassulaceae
17th on the list, which puts it at an estimated 1–3% of the formula.
Houttuynia Cordata Extract is an extract of the herb, Houttuynia cordata, Saururaceae
19th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Urea, (2,5-dioxo-4-imidazolidinyl)-
Each axis is scored from the ingredients present and how high up the list they sit.
Ingredients that pull and hold water in the upper layers of skin
Lipids and repair signals that support skin barrier integrity
Ingredients that mop up free radicals from UV and pollution
Ingredients that moderate sebum or absorb shine
Ingredients that act on uneven tone and post-inflammatory marks
Ingredients aimed at visible redness and reactivity
Retinoids, acids and enzymes that speed surface turnover
Peptides and growth factors that signal for collagen support
"Active" here means an ingredient carrying a recorded active type or a recognised UV filter.
Solvents, emollients, texture agents and preservatives — the formula that carries the actives.
Read from the full ingredient list. A brand's own claim may differ.
Citronellol, Geraniol
Rosa Damascena Flower Oil, Citronellol, Geraniol
Judged by the same curated rules our routine checker uses. It reads the ingredients, not the label.
Nothing in this formula belongs to a group our rules can put in conflict, so it layers freely. Order still matters — thinnest texture first.
This product is the "Treat" step.
Flags to check, not verdicts. None of this is medical advice — if you are pregnant, breastfeeding or treating a skin condition, ask a doctor.
Most ingredients do more than one job, so these counts add up to more than the 36 ingredients on the label.
Botanical material, usually for antioxidants or scent
Forms a film that slows water loss
Calms visible redness and irritation
Draws water into the upper layers of skin
Dissolves and carries everything else
Sets the thickness, spread and stability of the formula
Changes how the product smells or looks
Neutralises free radicals from UV and pollution
Softens and smooths by filling gaps between skin cells
Lifts oil and dirt, or holds oil and water together
Changes how skin behaves rather than how it feels
Every ingredient on the label, in order, with what it does and roughly how much of it is likely to be there.
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
2nd on the list, which puts it at an estimated 5–20% of the formula.
Rosa Damascena Flower water is an aqueous solution of the steam of the distillate obtained from the flowers of the Damask Rose, Rosa damascena, Rosaceae
3rd on the list, which puts it at an estimated 5–20% of the formula.
Glycerine ;Glycerol (INN); Glycerol (RIFM); Glycerolum (EP); Glycyl Alcohol; 1,2,3-Propanetriol; 1,2,3-Trihydroxypropane
4th on the list, which puts it at an estimated 2–10% of the formula.
2-(3,3-Dimethylbicyclo[2.2.1]hept-2-ylidene) ethanol
5th on the list, which puts it at an estimated 2–10% of the formula.
4-Hydroxyphenyl-beta-D-glucopyranoside
6th on the list, which puts it at an estimated 2–10% of the formula.
Methanaminium, 1-carboxy-N,N,N-trimethyl-, hydroxide, inner salt
7th on the list, which puts it at an estimated 1–5% of the formula.
alpha-D-Glucopyranoside, alpha-D-glucopyranosyl
8th on the list, which puts it at an estimated 1–5% of the formula.
Rosa Damascena Flower Oil is the volatile oil obtained from the flowers of the Damask Rose, Rosa damascena, Rosaceae
9th on the list, which puts it at an estimated 1–5% of the formula.
Hippophae Rhamnoides Fruit Extract is an extract of the fruit of the Sea Buckthorn, Hippophae rhamnoides L., Elaeagnaceae
10th on the list, which puts it at an estimated 1–5% of the formula.
Euterpe Oleracea Fruit Extract is an extract of the fruit of the Cabbage Palm, Euterpe oleracea, Arecaceae
11th on the list, which puts it at an estimated 1–3% of the formula.
Vaccinium Angustifolium Extract is an extract of the fruit of the Blueberry, Vaccinium angustifolium, Ericaceae
12th on the list, which puts it at an estimated 1–3% of the formula.
Phyllanthus Emblica Fruit Extract is an extract of the fruit of Phyllanthus emblica L., Euphorbiaceae
13th on the list, which puts it at an estimated 1–3% of the formula.
Vaccinium Macrocarpon Extract is an extract of the fruit of the Cranberry, Vaccinium macrocarpon, Ericaceae
14th on the list, which puts it at an estimated 1–3% of the formula.
Rhodiola Rosea Root Extract is an extract of the roots of the Rhodiola rosea, Crassulaceae
15th on the list, which puts it at an estimated 1–3% of the formula.
Sophora Flavescens Root Extract is the extract of the roots of Sophora flavescens, Fabaceae
16th on the list, which puts it at an estimated 1–3% of the formula.
Salix Nigra Bark Extract is an extract of the bark of the Black Willow, Salix nigra, salicaceae
17th on the list, which puts it at an estimated 1–3% of the formula.
Houttuynia Cordata Extract is an extract of the herb, Houttuynia cordata, Saururaceae
18th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Xanthan gum
19th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Urea, (2,5-dioxo-4-imidazolidinyl)-
20th 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
21st on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Rhus Semialata Gall Extract is an extract of the galls formed by Melaphis Chinensis parasitized on the leaves of the plant of the Chinese Sumach, Rhus semialata, Anacardaceae
22nd on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Olea Europaea Leaf Extract is the extract of the leaves of the Olive, Olea europaea L., Oleaceae
23rd on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Chrysanthemum Indicum Flower Extract is the extract of the flowers of Chrysanthemum indicum L., Asteraceae
24th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Sophora Japonica Extract is an extract of the buds of the Chinese Scholar Tree or the Japanese Pagoda Tree, Sophora japonica L., Leguminosae
25th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Prunella Vulgaris Leaf Extract is an extract of the leaves of the Self Heal, Prunella vulgaris L., Lamiaceae
26th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Castanea Crenata Shell Extract is an extract of the shell of the chestnut, Castanea crenata, Fagaceae
27th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Salix Alba Bark Extract is an extract of the bark of the White Willow, Salix alba L., salicaceae
28th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Centella Asiatica Extract is the extract of the whole plant Hydrocotyl, Centella asiatica L., Apiaceae
29th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
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)
30th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
31st on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Calendula Officinalis Flower Extract is an extract obrained from the flowers of the Calendula, Calendula officinalis L., Compositae
32nd on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Scutellaria Baicalensis Root Extract is an extract of the roots of the Scutellaria baicalensis, Lamiaceae
33rd on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Paeonia Suffruticosa Root Extract is an extract of the roots of the Chinese Peony, Paeonia suffruticosa, Ranunculaceae
34th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Glycyrrhiza Glabra Root Extract is an extract of the roots of the Licorice, Glycyrrhiza glabra L., Leguminosae
35th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
3,7-Dimethyl-6-octen-1-ol
36th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
2,6-Octadien-1-ol, 3,7-dimethyl-, (2E)-
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Shares 6 key ingredients with Brightening Serum: Water, Glycerin, Betaine, Panthenol, Allantoin
WATER, ROSA DAMASCENA FLOWER WATER, GLYCERIN, 2-DIMETHYLBICYCLOHEPT-2-YLIDENE ETHANOL, ARBUTIN, BETAINE, TREHALOSE, ROSA DAMASCENA FLOWER OIL, HIPPOPHAE RHAMNOIDES FRUIT EXTRACT, EUTERPE OLERACEA FRUIT EXTRACT, VACCINIUM ANGUSTIFOLIUM FRUIT EXTRACT, PHYLLANTHUS EMBLICA FRUIT EXTRACT, VACCINIUM MACROCARPON FRUIT EXTRACT, RHODIOLA ROSEA ROOT EXTRACT, SOPHORA FLAVESCENS ROOT EXTRACT, SALIX NIGRA BARK EXTRACT, HOUTTUYNIA CORDATA EXTRACT, XANTHAN GUM, ALLANTOIN, PANTHENOL, RHUS SEMIALATA GALL EXTRACT, OLEA EUROPAEA LEAF EXTRACT, CHRYSANTHEMUM INDICUM FLOWER EXTRACT, SOPHORA JAPONICA BUD EXTRACT, PRUNELLA VULGARIS LEAF EXTRACT, CASTANEA CRENATA SHELL EXTRACT, SALIX ALBA BARK EXTRACT, CENTELLA ASIATICA EXTRACT, BUTYLENE GLYCOL, 1,2-HEXANEDIOL, CALENDULA OFFICINALIS FLOWER EXTRACT, SCUTELLARIA BAICALENSIS ROOT EXTRACT, PAEONIA SUFFRUTICOSA ROOT EXTRACT, GLYCYRRHIZA GLABRA ROOT EXTRACT, CITRONELLOL, GERANIOL.
PANTHENOL.
Apply 1 to 2 pumps of serum over the entire face and neck. Gently massage to allow serum to fully absorb.
Judged on how rich the formula reads from its ingredient list, it suits Balanced, Combination (oily), Oily skin best. It is the least natural fit for Dry, Combination (dry) 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.
One ingredient could feed malassezia: Rosa Damascena Flower Oil. That describes the yeast's food supply, not a prediction that it will cause a breakout.
It contains Arbutin, which are usually reviewed with a doctor during pregnancy. Ask your doctor or midwife before using it.
No — it contains Citronellol, Geraniol.
No. Reading the full ingredient list, this formula is no drying alcohol.
Yes. Reading the full ingredient list, this formula is silicone-free.
Yes — it contains Rosa Damascena Flower Oil, Citronellol, Geraniol.
Yes. Reading the full ingredient list, this formula is paraben-free.
It layers well with Vitamin C (L-ascorbic acid), Retinoids (retinol, retinal), AHAs (glycolic, lactic), BHA (salicylic acid), PHAs (gluconolactone), Benzoyl peroxide.
Use it morning and evening, after toner, before moisturiser.
It lists 36 ingredients, of which 1 are recorded as actives.
ISOI.
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