cosrx Natural Bha Returning A-Sol
cosrx COSRX Natural Bha Returning A-Sol 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 parabensFree of siliconesFree of sulfatesFree of mineral oilFree of formaldehyde releasersContains animal-derivedContains alcoholContains PEGContains EU-26 allergensContains essential oilsContains fragrance
Formulation view O/W serum starting with propolis, using alcohol for solubility. Combines multiple organic acids (lactic, salicylate, glycolic) for exfoliation. Hydrated with HA and panthenol. Preserved with hexanediols. Suitable for robust skin routines. Factory observation: pH balancing with multiple acids is complex; high alcohol content causes quick evaporation and dryness, requiring a robust hydration layer to counteract potential irritation.
Key ingredients
- SKIN CONDITIONING
- Propolis Extract
- ANTIFOAMING
- Alcohol
- HUMECTANT
- Butylene Glycol
- BUFFERING
- Sodium LactateLactic AcidGlycolic Acid
- ANTIPLAQUE
- Water
- ANTIMICROBIAL
- Betaine Salicylate
Other ingredients
Sodium HyaluronatePanthenolAllantoinCassia Obtusifolia Seed Extract1,2-HexanediolEthyl HexanediolPeg-60 Hydrogenated Castor OilMelaleuca Alternifolia Leaf Oil
Skim through
| Ingredient | What it does | Irr. · Com. | Rating |
|---|---|---|---|
| Propolis Extract | SKIN CONDITIONING | 1 · – | Green |
| Alcohol | ANTIFOAMING, ANTIMICROBIAL, ASTRINGENT, FRAGRANCE, SOLVENT, VISCOSITY CONTROLLING | 1 · 0 | Yellow |
| Butylene Glycol | HUMECTANT, FRAGRANCE, SKIN CONDITIONING, SOLVENT, VISCOSITY CONTROLLING | 0 · 0 | Green |
| Sodium Lactate | BUFFERING, HUMECTANT, KERATOLYTIC | 0 · – | Green |
| Lactic Acid | BUFFERING, HUMECTANT, SKIN CONDITIONING | 1 · 0 | Green |
| Water | ANTIPLAQUE, SKIN CONDITIONING, SOLVENT | 0 · 0 | Green |
| Glycolic Acid | BUFFERING | 2 · 0 | Green |
| Betaine Salicylate | ANTIMICROBIAL, KERATOLYTIC | 1 · 0 | Green |
| Sodium Hyaluronate | HUMECTANT, SKIN CONDITIONING | 0 · 0 | Green |
| Panthenol | ANTISTATIC, HAIR CONDITIONING, SKIN CONDITIONING | 0 · 0 | Green |
| Allantoin | SKIN CONDITIONING, SKIN PROTECTING, SOOTHING | 0 · 0 | Green |
| Cassia Obtusifolia Seed Extract | SKIN CONDITIONING | 0 · – | Green |
| 1,2-Hexanediol | SKIN CONDITIONING, SOLVENT | 0 · 0 | Green |
| Ethyl Hexanediol | SOLVENT | 0 · 0 | Green |
| Peg-60 Hydrogenated Castor Oil | SURFACTANT - EMULSIFYING, SURFACTANT - CLEANSING | 1 · 0 | Green |
| Melaleuca Alternifolia Leaf Oil | ANTIOXIDANT, FRAGRANCE, SKIN PROTECTING, PERFUMING, SKIN CONDITIONING - MISCELLANEOUS | 2 · 0 | Green |
Ingredients explained
- Propolis Extract
- Propolis extract for antimicrobial care; complex composition, potential allergy risk.
- Alcohol
- Ethanol for solubility/drying at 5-15%; high conc. is drying/irritating, avoid lip/eye, low residue, balance with humectants.
- Butylene Glycol
- Polyol humectant and solvent at 1–5%; aids solubilization, light feel
- Sodium Lactate
- Sodium lactate for moisturizing and exfoliation; pH buffering agent
- Lactic Acid
- AHA pH adjuster at 0.5-5%; exfoliation/humectancy, mild at low conc., irritating at high, avoid conflict with alkaline preservatives.
- Water
- Primary solvent and base; requires preservative system to prevent microbial growth
- Glycolic Acid
- Glycolic acid for exfoliation; requires buffering at concentrations >10%, avoid combination with other acids.
- Betaine Salicylate
- Salicylate derivative for keratolytic and antimicrobial action; milder than salicylic acid.
- Sodium Hyaluronate
- Potent humectant at 0.1–2%; different MW for penetration depth, high levels may draw moisture
- Panthenol
- Panthenol (vitamin B5) at 1–5%; moisturizing and reparative, supports barrier recovery
- Allantoin
- Skin soother at 0.5-2%; promotes cell regeneration
- Cassia Obtusifolia Seed Extract
- Cassia obtusifolia seed extract, contains anthraquinones; watch for pigmentation with high long-term use.
- 1,2-Hexanediol
- Polyol solvent and preservative booster at 1–5%; light feel, can replace some traditional preservatives
- Ethyl Hexanediol
- Polyol solvent with humectant and mild preservative boost; low viscosity, compatible with many ingredients, gentle.
- Peg-60 Hydrogenated Castor Oil
- Non-ionic emulsifier and solubilizer at 1–5%; contains PEG, check acid compatibility and sensitive skin irritation
- Melaleuca Alternifolia Leaf Oil
- Tea tree oil, antibacterial and sebum regulating; highly sensitizing at concentrate level, dilute; avoid on broken skin.
Source: full ingredient list published on the product label, collected 2026-09-18. Ratings are our internal reading, not a regulatory conclusion. · Product page
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