COSRX ac blemish spot drying lotion
COSRX cosrx ac blemish spot drying lotion lists 16 ingredients on its label, 16 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 essential oilsFree of formaldehyde releasersContains alcoholContains EU-26 allergens
Formulation view Ethanol-based solvent paired with Zinc Oxide, Silica, and Salicylic Acid. Includes Centella extracts and Vitamin B12. Aims for instant oil control and local soothing, ideal for spot-treating oily blemishes. Factory note: Rapid ethanol evaporation makes powder dispersion difficult; intense mechanical mixing is needed to prevent clumping. Salicylic acid solubility in alcohol is limited.
Key ingredients
- ANTIFOAMING
- Alcohol
- ABSORBENT
- Calamine
- ANTIPLAQUE
- Water
- DENATURANT
- Glycerin
- ANTIMICROBIAL
- Zinc Oxide
- UV FILTER · 附录 VI · 最高浓度 25%* *: In case of combined use of Titanium Dioxide and Titanium Dioxide (nano)
- Titanium Dioxide
- ASTRINGENT
- Salix Alba Bark Extract
- SOLVENT
- Dimethyl Sulfone
Other ingredients
SilicaSalicylic AcidColloidal SulfurCamphorCyanocobalaminMadecassic AcidAsiaticosideAsiatic Acid
Skim through
| Ingredient | What it does | Irritancy | Rating |
|---|---|---|---|
| Alcohol | ANTIFOAMING, ANTIMICROBIAL, ASTRINGENT, FRAGRANCE, SOLVENT, VISCOSITY CONTROLLING | 1 | Yellow |
| Calamine | ABSORBENT, OPACIFYING, SKIN PROTECTING | 0 | Green |
| Water | ANTIPLAQUE, SKIN CONDITIONING, SOLVENT | 0 | Green |
| Glycerin | DENATURANT, HAIR CONDITIONING, HUMECTANT, ORAL CARE, SKIN PROTECTING, SOLVENT, VISCOSITY CONTROLLING, PERFUMING, FRAGRANCE, SKIN CONDITIONING - HUMECTANT | 0 | Green |
| Zinc Oxide | ANTIMICROBIAL, BULKING, COLORANT, ORAL CARE, SKIN PROTECTING, LIGHT STABILIZER, UV ABSORBER, UV FILTER · 限制 IV/144 VI/30 VI/30a | 0 | Yellow |
| Titanium Dioxide | UV FILTER · 附录 VI · 最高浓度 25%* *: In case of combined use of Titanium Dioxide and Titanium Dioxide (nano), the sum shall not exceed the limit given in column g (Maximum concentration in ready for use preparation) · 限制 <empty>; as a constituent of other substances, or in mixtures, in concentrations equal to, or greater than 0.1% by weight; Shall not be placed on the market, or used, as substance or in mixtures in concentrations equal to ot greater than 0.1% by weight; Shall not be used as propellant in aerosols for any use. Aerosols dispenser containing the substance as propellant shall not | 0 | Yellow |
| Salix Alba Bark Extract | ASTRINGENT, HAIR CONDITIONING, SKIN CONDITIONING, SOOTHING, TONIC | 2 | Green |
| Dimethyl Sulfone | SOLVENT, VISCOSITY CONTROLLING | 1 | Green |
| Silica | ABRASIVE, ABSORBENT, ANTICAKING, BULKING, OPACIFYING, VISCOSITY CONTROLLING | 0 | Green |
| Salicylic Acid | ANTI-SEBORRHEIC, HAIR CONDITIONING, KERATOLYTIC, FRAGRANCE, PRESERVATIVE, SKIN CONDITIONING · 限制 III/98 V/3 | 2 | Yellow |
| Colloidal Sulfur | ANTIMICROBIAL | 3 | Green |
| Camphor | DENATURANT, FRAGRANCE, PLASTICISER | 2 | Yellow |
| Cyanocobalamin | SKIN CONDITIONING | 0 | Green |
| Madecassic Acid | SKIN CONDITIONING | 0 | Green |
| Asiaticoside | ANTIOXIDANT, SKIN CONDITIONING, PERFUMING | 0 | Green |
| Asiatic Acid | SKIN CONDITIONING, LIGHT STABILIZER | 0 | Green |
Comedogenic ratings need a published source. This batch is not yet sourced, so it is not shown.
Ingredients explained
- Alcohol
- Ethanol for solubility/drying at 5-15%; high conc. is drying/irritating, avoid lip/eye, low residue, balance with humectants.
- Calamine
- Mineral powder for absorbing, opacifying and protecting skin; low irritation at low levels.
- Water
- Primary solvent and base; requires preservative system to prevent microbial growth
- Glycerin
- Workhorse humectant at 3–10%; tacky at high levels, pair with occlusives
- Zinc Oxide
- Physical UV filter, 30% max in EU; oily at high levels, pair with oils for feel.
- Titanium Dioxide
- Physical UV filter and colorant up to 25%; nano form requires attention
- Salix Alba Bark Extract
- Contains natural salicylic acid precursors, mild exfoliating and antibacterial; may irritate at high levels; avoid in sensitive skin.
- Dimethyl Sulfone
- Dimethyl sulfoxide, strong penetrant and solvent; volatile odor, concentration control needed
- Silica
- Silica powder at 1–10%; absorbs oil, thickens, provides matte finish, for oil-control products
- Salicylic Acid
- Lipophilic BHA at 0.5-2%; exfoliant/sebum control, irritation/sensitization at high conc., photosensitivity (SPF needed), avoid sensitive/pregnant.
- Colloidal Sulfur
- Antimicrobial exfoliant for acne; may oxidize in color and irritate at high doses
- Camphor
- Denaturant and fragrance with irritant and allergenic potential; strict concentration limits required for sensitive skin.
- Cyanocobalamin
- Vitamin B12 derivative, antioxidant and skin conditioning; light-sensitive, requires light-protective packaging, water-soluble
- Madecassic Acid
- Madecassoside hydrolysis product for barrier repair and anti-inflammatory action; mild, low typical usage
- Asiaticoside
- Plant glycoside, healing and antioxidant; poor solubility, use low levels with solubilizers.
- Asiatic Acid
- Pro-healing active, 0.1–1%; stability affected by light, store protected from light.
Source: full ingredient list published on the product label, collected 2026-09-17. Ratings are our internal reading, not a regulatory conclusion. · Product page
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