Peter Thomas Roth aha bha acne clearing gel
Peter Thomas Roth peter thomas roth aha bha acne clearing gel lists 34 ingredients on its label, 34 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.
- Salicylic Acid
- Alcohol Denat
- Aloe Barbadensis Leaf Juice
- Arginine
- Arnica Montana Flower Extract
- BHT
- Butylene Glycol
- Butylparaben
- Citric Acid
- Cyclopentasiloxane
- Denatonium Benzoate
- Diazolidinyl Urea
- Disodium Phosphate
- Ethylparaben
- Glycerin
- Glycolic Acid
- Glycyrrhiza Glabra Root Extract
- Glyoxal
- Helianthus Annuus Seed Oil
- Hydroxyethylcellulose
- Isobutylparaben
- Methylparaben
- Phenoxyethanol
- Polysorbate 60
- Potassium Sorbate
- Propylene Glycol
- Propylparaben
- Retinyl Palmitate
- Sodium Benzoate
- Sodium Hydroxide
- Sodium Nitrate
- Sodium Phosphate
- T-Butyl Alcohol
- Water/Aqua/Eau
Highlights
Free of sulfatesFree of mineral oilContains alcoholContains fragranceContains parabensContains siliconesContains formaldehyde releasersContains essential oilsContains EU-26 allergensContains PEG
Formulation view AHA/BHA gel with salicylic and glycolic acids, alcohol for penetration. Aloe and licorice soothe. Contains parabens. Suitable for tolerant, thick skin needing strong exfoliation; avoid if sensitive or pregnant. Strict sunscreen use required.
Key ingredients
- ANTI-SEBORRHEIC
- Salicylic Acid
- 溶剂
- Alcohol Denat
- SKIN CONDITIONING
- Aloe Barbadensis Leaf Juice
- ANTISTATIC
- Arginine
- FRAGRANCE
- Arnica Montana Flower ExtractButylparaben
- ANTIOXIDANT
- BHT
- HUMECTANT
- Butylene Glycol
Other ingredients
Citric AcidCyclopentasiloxaneDenatonium BenzoateDiazolidinyl UreaDisodium PhosphateEthylparabenGlycerinGlycolic AcidGlycyrrhiza Glabra Root ExtractGlyoxalHelianthus Annuus Seed OilHydroxyethylcelluloseIsobutylparabenMethylparabenPhenoxyethanolPolysorbate 60Potassium SorbatePropylene GlycolPropylparabenRetinyl PalmitateSodium BenzoateSodium HydroxideSodium NitrateSodium PhosphateT-Butyl AlcoholWater/Aqua/Eau
Skim through
| Ingredient | What it does | Irr. · Com. | Rating |
|---|---|---|---|
| Salicylic Acid | ANTI-SEBORRHEIC, HAIR CONDITIONING, KERATOLYTIC, FRAGRANCE, PRESERVATIVE, SKIN CONDITIONING · 限制 III/98 V/3 | 2 · 0 | Yellow |
| Alcohol Denat | 溶剂,皮肤调理剂 | 1 · 0 | Yellow |
| Aloe Barbadensis Leaf Juice | SKIN CONDITIONING | 0 · 0 | Green |
| Arginine | ANTISTATIC, HAIR CONDITIONING, FRAGRANCE, SKIN CONDITIONING | 0 · 0 | Green |
| Arnica Montana Flower Extract | FRAGRANCE, SKIN CONDITIONING, PERFUMING | — | Green |
| BHT | ANTIOXIDANT, FRAGRANCE · 限制 III / 325 | 0 · 0 | Yellow |
| Butylene Glycol | HUMECTANT, FRAGRANCE, SKIN CONDITIONING, SOLVENT, VISCOSITY CONTROLLING | 0 · 0 | Green |
| Butylparaben | FRAGRANCE, PRESERVATIVE · 限制 V/12a | 0 · 0 | Yellow |
| Citric Acid | BUFFERING, CHELATING, FRAGRANCE | 1 · 0 | Green |
| Cyclopentasiloxane | SKIN CONDITIONING - EMOLLIENT, HAIR CONDITIONING, SKIN CONDITIONING, SOLVENT | 0 · 0 | Green |
| Denatonium Benzoate | DENATURANT, FRAGRANCE | 1 · – | Green |
| Diazolidinyl Urea | PRESERVATIVE · 限制 V/46 | 1 · – | Yellow |
| Disodium Phosphate | ANTICORROSIVE, BUFFERING, FRAGRANCE | 1 · 0 | Green |
| Ethylparaben | FRAGRANCE, PRESERVATIVE · 限制 V/12 | 1 · 0 | Yellow |
| Glycerin | DENATURANT, HAIR CONDITIONING, HUMECTANT, ORAL CARE, SKIN PROTECTING, SOLVENT, VISCOSITY CONTROLLING, PERFUMING, FRAGRANCE, SKIN CONDITIONING - HUMECTANT | 0 · 0 | Green |
| Glycolic Acid | BUFFERING | 2 · 0 | Green |
| Glycyrrhiza Glabra Root Extract | BLEACHING, SKIN CONDITIONING - EMOLLIENT, SKIN CONDITIONING, SMOOTHING, SOOTHING, PERFUMING | — | Green |
| Glyoxal | 附录 III · 最高浓度 100 mg/kg · 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 | 5 · – | Yellow |
| Helianthus Annuus Seed Oil | SKIN CONDITIONING - EMOLLIENT, SOLVENT, SKIN CONDITIONING - MISCELLANEOUS, SKIN CONDITIONING - OCCLUSIVE | 0 · 0 | Green |
| Hydroxyethylcellulose | BINDING, EMULSION STABILISING, FILM FORMING, LIGHT STABILIZER, VISCOSITY CONTROLLING | 0 · 0 | Green |
| Isobutylparaben | ANTIMICROBIAL · 限制 II/1375 | 0 · 0 | Yellow |
| Methylparaben | FRAGRANCE, PRESERVATIVE · 限制 V/12 | 0 · 0 | Yellow |
| Phenoxyethanol | ANTIMICROBIAL, PRESERVATIVE · 限制 V/29 | 1 · 0 | Yellow |
| Polysorbate 60 | SURFACTANT - EMULSIFYING, SURFACTANT - CLEANSING | 1 · – | Green |
| Potassium Sorbate | FRAGRANCE, PRESERVATIVE · 限制 V/4 | 0 · – | Yellow |
| Propylene Glycol | HUMECTANT, FRAGRANCE, SOLVENT, VISCOSITY CONTROLLING, SKIN CONDITIONING - HUMECTANT, SKIN CONDITIONING - MISCELLANEOUS | 1 · 0 | Green |
| Propylparaben | PRESERVATIVE, PERFUMING · 限制 V/12 | 1 · 0 | Yellow |
| Retinyl Palmitate | SKIN CONDITIONING - MISCELLANEOUS · 限制 III/376 | 1 · 2 | Green |
| Sodium Benzoate | ANTICORROSIVE, FRAGRANCE, PRESERVATIVE · 限制 V/1 | 0 · – | Yellow |
| Sodium Hydroxide | BUFFERING, DENATURANT · 限制 III/15a | 3 · – | Green |
| Sodium Nitrate | ORAL CARE, SOOTHING | 0 · 0 | Green |
| Sodium Phosphate | ANTI-SEBORRHEIC, BUFFERING, DEODORANT | 2 · – | Green |
| T-Butyl Alcohol | DENATURANT, SOLVENT, PERFUMING | 2 · 0 | Green |
| Water/Aqua/Eau | 溶剂 | 0 · 0 | Green |
Ingredients explained
- Salicylic Acid
- Lipophilic BHA at 0.5-2%; exfoliant/sebum control, irritation/sensitization at high conc., photosensitivity (SPF needed), avoid sensitive/pregnant.
- Alcohol Denat
- Denatured ethanol; solvent, penetration enhancer, and quick-dry agent; high % may compromise barrier in dry skin.
- Aloe Barbadensis Leaf Juice
- Natural humectant and soother with high water activity; requires preservative system, generally well-tolerated
- Arginine
- Arginine for moisturizing/conditioning; amino acid, high biocompatibility, often used in blends.
- Arnica Montana Flower Extract
- Arnica extract; plant soothing/perfume alternative; low conc, potential sensitizer, patch test advised
- BHT
- Lipophilic antioxidant at 0.01-0.05%; ineffective with acidic systems, label-sensitive, check regulatory limits as preservative alternative.
- Butylene Glycol
- Polyol humectant and solvent at 1–5%; aids solubilization, light feel
- Butylparaben
- Butylparaben preservative; low concentrations; potential endocrine concerns, regulatory limits apply.
- Citric Acid
- Buffer and chelator at 0.1–2%; adjusts pH, may irritate sensitive skin at low pH
- Cyclopentasiloxane
- Cyclopentasiloxane for emollient/solvent; volatile silicone, smooth feel, check VOC regulations.
- Denatonium Benzoate
- Industrial denaturant to alter scent and prevent ingestion; not intended for cosmetic use, verify source compliance.
- Diazolidinyl Urea
- Formaldehyde-releasing preservative; EU cap at 0.2%; avoid for formaldehyde-sensitive users
- Disodium Phosphate
- Phosphate buffer for pH adjustment and preservation; water-soluble; high levels may irritate mucous membranes.
- Ethylparaben
- Paraben preservative; EU restricted, watch total load and sensitive skin reactions
- Glycerin
- Workhorse humectant at 3–10%; tacky at high levels, pair with occlusives
- Glycolic Acid
- Glycolic acid for exfoliation; requires buffering at concentrations >10%, avoid combination with other acids.
- Glycyrrhiza Glabra Root Extract
- Liquorice root extract for soothing and brightening; batch variability, watch polyphenol interactions
- Glyoxal
- Prohibited allergen; max 0.1% limit; shall not be placed on market in concentrations >= 0.1%.
- Helianthus Annuus Seed Oil
- Sunflower seed oil for emollient/occlusive; high linoleic acid, low comedogenicity.
- Hydroxyethylcellulose
- Water-soluble cellulose ether for thickening and suspension stabilization; sensitive to ions, electrolytes reduce viscosity, use at pH 7-8.
- Isobutylparaben
- Paraben preservative; used in combination, restricted usage
- Methylparaben
- Preservative, narrow spectrum; often combined, check allergen risk and regulatory limits.
- Phenoxyethanol
- Broad-spectrum preservative at ≤1%; may irritate sensitive eye areas, often paired with ethylhexylglycerin
- Polysorbate 60
- Non-ionic emulsifier and solubilizer for O/W or W/O stability; may cause mild stinging on sensitive skin, typically 1-5%.
- Potassium Sorbate
- Preservative effective below pH 6; combinable with sodium benzoate
- Propylene Glycol
- Polyol humectant at 3-10%; hygroscopic, slight tackiness, mild irritation at high conc., verify preservative efficacy, no allergen.
- Propylparaben
- Medium-chain preservative; restricted use, pH-sensitive efficacy.
- Retinyl Palmitate
- Vitamin A ester for skin conditioning; light-sensitive, requires protection, avoid in pregnancy.
- Sodium Benzoate
- Preservative booster, effective below pH 4.5; combinable with sorbates
- Sodium Hydroxide
- Strong base neutralizer for pH adjustment; handle with extreme care
- Sodium Nitrate
- Milding agent mainly in oral care (mouthwash/toothpaste); rare in cosmetics.
- Sodium Phosphate
- Phosphate buffer and anti-seborrheic; pH regulator, aids sebum control, high levels are irritating
- T-Butyl Alcohol
- Fast-evaporating solvent; sharp odor and potential irritation at high levels, limit usage
- Water/Aqua/Eau
- Primary aqueous solvent and carrier; no specific incompatibilities, focus on microbial stability.
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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