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peter-thomas-roth Peter Thomas Roth Professional Strength 3% Retinoid Plus

peter-thomas-roth Peter Thomas Roth Professional Strength 3% Retinoid Plus lists 31 ingredients on its label, 28 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.

  1. Cyclopentasiloxane
  2. Isononyl Isononanoate
  3. Dimethyl Isosorbide
  4. Dimethiconol
  5. Hydroxypinacolone Retinoate 0.3%
  6. Ceramide AP
  7. Ceramide Eop
  8. Ceramide Eos
  9. Ceramide Ns
  10. Ceramide NP
  11. Sodium Hyaluronate
  12. Sodium PCA
  13. Glycerin
  14. Tocopherol
  15. Ascorbyl Palmitate
  16. Caprooyl Phytosphingosine
  17. Caprooyl Sphingosine
  18. Hydroxyphenyl Propamidobenzoic Acid
  19. Ethylhexylglycerin
  20. Ethylhexyl Hydroxystearate
  21. Cholesterol
  22. Water/Aqua/Eau
  23. Pentylene Glycol
  24. Butylene Glycol
  25. Behenic Acid
  26. Hydroxystearic Acid
  27. Ceteareth-25
  28. Polysilicone-11
  29. 4-T-Butylcyclohexanol
  30. Cetyl Alcohol
  31. Phenoxyethanol

Highlights

Free of alcoholFree of parabensFree of sulfatesFree of mineral oilFree of essential oilsFree of formaldehyde releasersContains siliconesContains fragranceContains animal-derived

Formulation view Features a volatile silicone base with isosorbide for light texture. Contains 0.3% hydroxypinacolone retinoate, complexed with five ceramides and cholesterol for barrier repair. Includes antioxidants. Suitable for tolerant skin seeking efficacy. Factory view: clear active concentration and barrier-focused system minimize irritation risk.

Key ingredients

SKIN CONDITIONING - EMOLLIENT
Cyclopentasiloxane
ANTISTATIC
Isononyl Isononanoate
SOLVENT
Dimethyl Isosorbide
ANTIFOAMING
Dimethiconol
HAIR CONDITIONING
Ceramide APCeramide EopCeramide EosCeramide Ns

Other ingredients

Hydroxypinacolone Retinoate 0.3%Ceramide NPSodium HyaluronateSodium PCAGlycerinTocopherolAscorbyl PalmitateCaprooyl PhytosphingosineCaprooyl SphingosineHydroxyphenyl Propamidobenzoic AcidEthylhexylglycerinEthylhexyl HydroxystearateCholesterolWater/Aqua/EauPentylene GlycolButylene GlycolBehenic AcidHydroxystearic AcidCeteareth-25Polysilicone-114-T-ButylcyclohexanolCetyl AlcoholPhenoxyethanol

Skim through

IngredientWhat it doesIrr. · Com.Rating
CyclopentasiloxaneSKIN CONDITIONING - EMOLLIENT, HAIR CONDITIONING, SKIN CONDITIONING, SOLVENT0 · 0Green
Isononyl IsononanoateANTISTATIC, SKIN CONDITIONING - EMOLLIENT, SKIN CONDITIONING0 · 0Green
Dimethyl IsosorbideSOLVENT, VISCOSITY CONTROLLING0 · 0Green
DimethiconolANTIFOAMING, SKIN CONDITIONING - EMOLLIENT, MOISTURISING0 · 3Green
Hydroxypinacolone Retinoate 0.3%Not decoded yet——
Ceramide APHAIR CONDITIONING, SKIN CONDITIONING0 · 0Green
Ceramide EopHAIR CONDITIONING, SKIN CONDITIONING0 · 0Green
Ceramide EosHAIR CONDITIONING, SKIN CONDITIONING0 · 0Green
Ceramide NsHAIR CONDITIONING, SKIN CONDITIONING - MISCELLANEOUS0 · 0Green
Ceramide NPHAIR CONDITIONING, SKIN CONDITIONING - MISCELLANEOUS0 · 0Green
Sodium HyaluronateHUMECTANT, SKIN CONDITIONING0 · 0Green
Sodium PCAANTISTATIC, HAIR CONDITIONING, HUMECTANT, SKIN CONDITIONING– · 0Green
GlycerinDENATURANT, HAIR CONDITIONING, HUMECTANT, ORAL CARE, SKIN PROTECTING, SOLVENT, VISCOSITY CONTROLLING, PERFUMING, FRAGRANCE, SKIN CONDITIONING - HUMECTANT0 · 0Green
TocopherolANTIOXIDANT, FRAGRANCE, SKIN CONDITIONING - MISCELLANEOUS, SKIN CONDITIONING - OCCLUSIVE0 · 0Green
Ascorbyl PalmitateANTIOXIDANT, FRAGRANCE—Green
Caprooyl PhytosphingosineHAIR CONDITIONING, SKIN CONDITIONING0 · –Green
Caprooyl SphingosineHAIR CONDITIONING, SKIN CONDITIONING0 · –Green
Hydroxyphenyl Propamidobenzoic AcidSKIN CONDITIONING0 · 0Green
EthylhexylglycerinDEODORANT, SKIN CONDITIONING0 · 0Green
Ethylhexyl HydroxystearateSKIN CONDITIONING - EMOLLIENT0 · 0Green
CholesterolSKIN CONDITIONING - EMOLLIENT, SURFACTANT - EMULSIFYING, SKIN CONDITIONING, LIGHT STABILIZER, VISCOSITY CONTROLLING0 · 0Green
Water/Aqua/Eau溶剂0 · 0Green
Pentylene GlycolSKIN CONDITIONING, SOLVENT0 · 0Green
Butylene GlycolHUMECTANT, FRAGRANCE, SKIN CONDITIONING, SOLVENT, VISCOSITY CONTROLLING0 · 0Green
Behenic AcidCLEANSING, SURFACTANT - EMULSIFYING, OPACIFYING, SURFACTANT - CLEANSING0 · 5Green
Hydroxystearic AcidCLEANSING, SURFACTANT - EMULSIFYING, SURFACTANT - CLEANSING0 · 0Green
Ceteareth-25Not decoded yet——
Polysilicone-11Not decoded yet——
4-T-ButylcyclohexanolFRAGRANCE, PERFUMING0 · –Green
Cetyl AlcoholSKIN CONDITIONING - EMOLLIENT, SURFACTANT - EMULSIFYING, EMULSION STABILISING, SURFACTANT - FOAM BOOSTING, FRAGRANCE, OPACIFYING, SURFACTANT - CLEANSING, VISCOSITY CONTROLLING1 · 1Green
PhenoxyethanolANTIMICROBIAL, PRESERVATIVE · 限制 V/291 · 0Yellow

Ingredients explained

Cyclopentasiloxane
Cyclopentasiloxane for emollient/solvent; volatile silicone, smooth feel, check VOC regulations.
Isononyl Isononanoate
Light, low-viscosity ester emollient; excellent spreadability, good for gels and light lotions
Dimethyl Isosorbide
Dimethyl isosorbide as solvent and viscosity control; low toxicity, common use
Dimethiconol
Dimethiconol; silicone emollient providing silky feel and reducing friction; moderate comedogenicity, avoid excess.
Hydroxypinacolone Retinoate 0.3%
Not decoded yet
Ceramide AP
Ceramide analog for barrier repair; best results when combined with cholesterol and free fatty acids
Ceramide Eop
Ceramide EOP, repairs skin barrier lipids; often blended with cholesterol and fatty acids.
Ceramide Eos
Barrier-repairing ceramide, 0.1–1%; optimal with hydrated lipids, suitable for dry skin
Ceramide Ns
Ceramide NS for barrier repair; gentle and suitable for sensitive or dry skin.
Ceramide NP
Ceramide N3 for barrier repair; lipophilic, needs oil phase or emulsion, avoid high standalone use.
Sodium Hyaluronate
Potent humectant at 0.1–2%; different MW for penetration depth, high levels may draw moisture
Sodium PCA
Sodium PCA, NMF component, 1-10% humectant; salty/tacky at high levels.
Glycerin
Workhorse humectant at 3–10%; tacky at high levels, pair with occlusives
Tocopherol
Natural antioxidant (vitamin E) at 0.1–1%; prone to oxidation, store protected from light
Ascorbyl Palmitate
Ascorbyl palmitate, lipophilic Vit C ester, antioxidant; oxidizes, needs light/air protection.
Caprooyl Phytosphingosine
Plant-derived biomimetic lipid for hair and skin conditioning.
Caprooyl Sphingosine
Biomimetic lipid for hair and skin conditioning; often formulated with other lipids.
Hydroxyphenyl Propamidobenzoic Acid
Bioactive marker in Evening Primrose Oil, antioxidant and soothing; used at low levels
Ethylhexylglycerin
Mild conditioner and preservative booster at 0.5–1%; reduces preservative load, smooth feel
Ethylhexyl Hydroxystearate
Ester emollient 1-5%; non-comedogenic, silky, compatible with sunscreens
Cholesterol
Cholesterol; barrier repair lipid mimicking stratum corneum; often blended with ceramides, plant or fermentation source.
Water/Aqua/Eau
Primary aqueous solvent and carrier; no specific incompatibilities, focus on microbial stability.
Pentylene Glycol
Polyol humectant at 1-3%; low irritancy, suitable for sensitive skin
Butylene Glycol
Polyol humectant and solvent at 1–5%; aids solubilization, light feel
Behenic Acid
Behenic acid, emulsifier and thickener; high comedogenic rating, limit use on acne-prone skin.
Hydroxystearic Acid
羟基硬脂酸，多元醇型乳化剂，可增强乳化稳定性，具一定保湿与成膜性
Ceteareth-25
Not decoded yet
Polysilicone-11
Not decoded yet
4-T-Butylcyclohexanol
Fixative and scent masker; not a primary skin conditioning agent.
Cetyl Alcohol
Cetyl alcohol for emulsification/thickening; high concentration >10% may irritate.
Phenoxyethanol
Broad-spectrum preservative at ≤1%; may irritate sensitive eye areas, often paired with ethylhexylglycerin

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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