neostrata Dark Spot Corrector
neostrata Neostrata Dark Spot Corrector lists 19 ingredients on its label, 18 decoded. See what each one does, its irritancy and comedogenic tendency, and its status in national inventories.
Ingredients overview
Label order. Colour is our internal rating: green routine, yellow restricted or worth a look, red prohibited or high-risk, grey not yet decoded.
Ingredients are listed in label order; the order reflects the label only, not exact concentrations.
Highlights
Free of fragranceFree of parabensFree of siliconesFree of sulfatesFree of mineral oilFree of formaldehyde releasersContains alcoholContains essential oilsContains EU-26 allergens
Key ingredients
- SOLVENT
- Aqua
- 溶剂
- Alcohol Denat
- HUMECTANT
- Propylene Glycol
- CHELATING
- Gluconolactone
- BUFFERING
- Glycolic AcidLactobionic Acid
- BUFFERING · 限制 III
- Potassium Hydroxide
- ANTISTATIC
- Polyquaternium-10
Other ingredients
Citric AcidKojic Acid4-ButylresorcinolGlycyrrhiza Glabra Root ExtractAscorbic AcidArginineBHTSodium SulfiteSodium BisulfiteCi 19140Ci 17200
Skim through
| Ingredient | What it does | Irr. · Com. | Rating |
|---|---|---|---|
| Aqua | SOLVENT | 0 · 0 | Green |
| Alcohol Denat | 溶剂,皮肤调理剂 | 1 · 0 | Yellow |
| Propylene Glycol | HUMECTANT, FRAGRANCE, SOLVENT, VISCOSITY CONTROLLING, SKIN CONDITIONING - HUMECTANT, SKIN CONDITIONING - MISCELLANEOUS | 1 · 0 | Green |
| Gluconolactone | CHELATING, SKIN CONDITIONING | 2 · 1 | Green |
| Glycolic Acid | BUFFERING | 2 · 0 | Green |
| Potassium Hydroxide | BUFFERING · 限制 III/15a, 15d | 3 · – | Yellow |
| Polyquaternium-10 | ANTISTATIC, FILM FORMING | 0 · 0 | Green |
| Lactobionic Acid | BUFFERING | 0 · 0 | Green |
| Citric Acid | BUFFERING, CHELATING, FRAGRANCE | 1 · 0 | Green |
| Kojic Acid | ANTIOXIDANT, BLEACHING · 限制 III / 375 | 2 · 0 | Yellow |
| 4-Butylresorcinol | Not decoded yet | — | — |
| Glycyrrhiza Glabra Root Extract | BLEACHING, SKIN CONDITIONING - EMOLLIENT, SKIN CONDITIONING, SMOOTHING, SOOTHING, PERFUMING | — | Green |
| Ascorbic Acid | ANTIOXIDANT, BUFFERING, FRAGRANCE, SKIN CONDITIONING | 2 · 0 | Green |
| Arginine | ANTISTATIC, HAIR CONDITIONING, FRAGRANCE, SKIN CONDITIONING | 0 · 0 | Green |
| BHT | ANTIOXIDANT, FRAGRANCE · 限制 III / 325 | 0 · 0 | Yellow |
| Sodium Sulfite | ANTIOXIDANT, HAIR WAVING OR STRAIGHTENING, REDUCING · 限制 III/99 V/9 | 1 · 0 | Yellow |
| Sodium Bisulfite | ANTIOXIDANT, HAIR WAVING OR STRAIGHTENING, PRESERVATIVE, REDUCING · 限制 III/99 V/9 | 3 · – | Yellow |
| Ci 19140 | COLORANT, HAIR DYEING · 限制 IV/44 (CI 19140) III/189 (Acid Yellow 23; Acid Yellow 23 Aluminum lake) | 0 · 0 | Green |
| Ci 17200 | COLORANT, HAIR DYEING · 限制 IV/37 (CI 17200) III/254 (Acid Red 33) | 2 · – | Green |
Ingredients explained
- Aqua
- Solvent, main base; microbial control is critical
- Alcohol Denat
- Denatured ethanol; solvent, penetration enhancer, and quick-dry agent; high % may compromise barrier in dry skin.
- Propylene Glycol
- Polyol humectant at 3-10%; hygroscopic, slight tackiness, mild irritation at high conc., verify preservative efficacy, no allergen.
- Gluconolactone
- Multifunctional agent for chelation and permeation; acidic, may irritate at high levels, buffer recommended.
- Glycolic Acid
- Glycolic acid for exfoliation; requires buffering at concentrations >10%, avoid combination with other acids.
- Potassium Hydroxide
- Strong alkali pH adjuster, trace usage (<0.1%); corrosive, must be neutralized.
- Polyquaternium-10
- Cationic polymer for fabric or hair smoothness; generally low irritation but may conflict with other cationic actives
- Lactobionic Acid
- Polyhydroxy acid for pH buffering; gentle, check stability at high levels
- Citric Acid
- Buffer and chelator at 0.1–2%; adjusts pH, may irritate sensitive skin at low pH
- Kojic Acid
- Tyrosinase inhibitor for whitening; EU limit 1% in water, unstable and requires light protection, potential irritation.
- 4-Butylresorcinol
- Not decoded yet
- Glycyrrhiza Glabra Root Extract
- Liquorice root extract for soothing and brightening; batch variability, watch polyphenol interactions
- Ascorbic Acid
- Vitamin C, potent antioxidant requiring acidic environment for stability; oxidizes and discolors easily, needs light and air protection, concentration 1-10%, pure L-ascorbic acid is more irritating.
- Arginine
- Arginine for moisturizing/conditioning; amino acid, high biocompatibility, often used in blends.
- BHT
- Lipophilic antioxidant at 0.01-0.05%; ineffective with acidic systems, label-sensitive, check regulatory limits as preservative alternative.
- Sodium Sulfite
- Sulfite antioxidant to prevent oxidation; sulfites are known allergens and must be strictly declared on labels.
- Sodium Bisulfite
- Reducing agent and preservative in hair waving/straightening; irritating; restricted use
- Ci 19140
- Acid Yellow 23 lake; for coloring and hair dyeing. High water solubility and precipitation risk, pH control required.
- Ci 17200
- Acid Red 33 hair dye; restricted use, potential scalp irritation
Source: full ingredient list published on the product label, collected 2026-09-19. Ratings are our internal reading, not a regulatory conclusion. · Product page
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