Peter Thomas Roth Beta Hydroxy Acid 2% Acne Wash

Peter Thomas Roth

Peter Thomas Roth Beta Hydroxy Acid 2% Acne Wash

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About this product

The Peter Thomas Roth Beta Hydroxy Acid 2% Acne Wash is a treatment. Our analysis of its 10 ingredients (6 low-risk) rates it Great (77/100). Based on its ingredients, it looks well-suited to oily / acne-prone skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Treatments
Ingredients
10
Low-risk
6
Fragrance
Fragrance-free
Origin
United States

The evidence

Quick Product Notes

Paraben-Free Sulfate-Free Alcohol-Free Silicone-Free EU Allergen-Free Fungal Acne (Malassezia) Safe Minimal Ingredients

Notable Effects & Ingredients

No Notable Effects & Ingredients

Ingredients Related to Skin Types

Good   Bad — tap a skin type to see which ingredients · estimated from ingredient functions
Dry Skin 1/3
Good for dry skin
Propylene Glycol
Caution for dry skin
Lauryl Glucoside Salicylic Acid Sodium Laureth Sulfate
Oily/Acne-Prone Skin 1/0
Good for oily/acne-prone skin
Salicylic Acid
Sensitive Skin 1/4
Good for sensitive skin
Allantoin
Caution for sensitive skin
Propylene Glycol Salicylic Acid Methylparaben Quaternium-15

Ingredients list

10 total
Lower hazard (1) Higher hazard (8)
All10 Skin Conditioning7 Fragrance3 Hair Conditioning3 Preservative3 Antistatic Agent2 Surfactant2 Foam Boosting2 Cleansing2
EWG CIR Ingredient Name & Cosmetic Functions Notes
4
B
Salicylic Acid
(Antiacne Agent, Antidandruff Agent, Corn/Callus/Wart Remover, Denaturant, Exfoliant, Fragrance, Hair Conditioning, Skin Conditioning, Keratolytic, Masking, Preservative)
Good for Oily Skin
Good for Oily Skin
Bad for Sensitive Skin
Bad for Sensitive Skin
1
Water
(Solvent)
3
Sodium Laureth Sulfate
(Cleansing, Emulsifying, Foaming, Surfactant)
Bad for Oily Skin
Bad for Oily Skin
Sulfate
Sulfate
1
B
Lauryl Glucoside
(Cleansing, Surfactant)
4
B
Cocamidopropyl Betaine
(Antistatic Agent, Hair Conditioning, Skin Conditioning, Sufactant, Foam Boosting, Viscosity Increasing Agent, Viscosity Controlling)
3
B
Propylene Glycol
(Fragrance, Humectant, Skin Conditioningagent Miscellaneous, Solvent, Viscosity Decreasing Agent, Skin Conditioning, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
A
Allantoin
(Skin Conditioning, Skin Protecting, Soothing)
Good for Oily Skin
Good for Oily Skin
Good for Sensitive Skin
Good for Sensitive Skin
1
A
Panthenol
(Antistatic Agent, Hair Conditioning, Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
8
B
Quaternium-15
(Preservative)
4
A
Methylparaben
(Fragrance, Preservative)
Paraben
Paraben

My Ingredient Notes

No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.

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Key ingredients

Salicylic Acid
Exfoliant, Skin Conditioning
Cocamidopropyl Betaine
Skin Conditioning
Propylene Glycol
Humectant, Skin Conditioning
Allantoin
Skin Conditioning, Skin Protecting
Panthenol
Skin Conditioning

Benefits

Fungal-acne (Malassezia) safe
Good for oily/acne-prone skin

Concerns

Contains paraben
Contains sulfate
Quaternium-15 — higher EWG
May not suit dry skin
May not suit sensitive skin

EWG flags hazard, not real-world risk — ratings don't account for how much of an ingredient a product contains. Treat these as things to research, not verdicts. How we score →

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Lauryl Glucoside
Cleansing, Surfactant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B CleansingSurfactant
Cocamidopropyl Betaine
Antistatic agent, Hair conditioning
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR B Antistatic agentHair conditioningSkin conditioningSufactantFoam boostingViscosity increasing agentViscosity controlling
Salicylic Acid
Antiacne agent, Antidandruff agent
Skin irritation can occur at high concentrationRead moreShow less
EWG 4 CIR B Antiacne agentAntidandruff agentCorn/callus/wart removerDenaturantExfoliantFragranceHair conditioningSkin conditioningKeratolyticMaskingPreservative Good for Oily SkinBad for Sensitive Skin
Sodium Laureth Sulfate
Cleansing, Emulsifying
Potentially comedogenic - can block poresRead moreShow less
EWG 3 CleansingEmulsifyingFoamingSurfactant Bad for Oily SkinSulfate
Propylene Glycol
Fragrance, Humectant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B FragranceHumectantSkin-conditioningagent - miscellaneousSolventViscosity decreasing agentSkin conditioningViscosity controlling Good for Dry Skin
Allantoin
Skin conditioning, Skin protecting
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningSkin protectingSoothing Good for Oily SkinGood for Sensitive Skin
Panthenol
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antistatic agentHair conditioningSkin conditioning Good for Dry Skin
Quaternium-15
Preservative
Higher-hazard ingredient.Read moreShow less
EWG 8 CIR B Preservative
Methylparaben
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Evening, start slow: Best in the PM a few times a week to begin with; avoid layering with other strong actives the same night.
  • 3 Wear SPF the next day: Acids and retinoids increase sun sensitivity — daily sunscreen is a must while using this.

General guidance from this product's category and active ingredients — always follow the directions on the package.

Trust & honesty

Pregnancy & breastfeeding

Contains ingredients some choose to avoid or double-check while pregnant or nursing.

Use with caution
BHA (salicylic) (Salicylic Acid)

Low-strength topical salicylic acid (BHA) is generally considered fine. Caution is usually reserved for high-strength leave-on products and salicylic peels.

This is general information, not medical advice. Pregnancy guidance varies and depends on concentration and your individual situation — always check with your doctor, midwife or pharmacist. How we flag this.

Effective levels — general guide

The concentrations these actives are typically effective at in research — not a measurement of this product.

BHA (salicylic) 0.5–2%

Salicylic acid is OTC-capped at 2%; 0.5–2% is the usual leave-on range. Much below that it acts more as a soothing agent than an exfoliant.

Salicylic Acid

INCI lists don't disclose amounts, and we don't claim to know this product's levels — these are the ranges these ingredients are usually effective at, so you can tell a real formula from "fairy-dusting" a marketed active. How we estimate this.

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