peter-thomas-roth Peter Thomas Roth Mega Rich Shampoo
peter-thomas-roth Peter Thomas Roth Mega Rich Shampoo lists 24 ingredients on its label, 23 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.
- Water
- Sodium Laureth Sulfate
- Cocamidopropyl Betaine
- Cocamide MEA
- Polyquaternium-10
- Sodium Chloride
- Glycerin
- Biotin
- Panthenol
- Tocopheryl Acetate
- Ascorbic Acid
- Citric Acid
- Thiamine Nitrate
- Propylene Glycol
- Citronellol
- Hexyl Cinnamal
- Limonene
- Linalool
- Tetrasodium EDTA
- Methylisothiazolinone
- Methylchloroisothiazolinone
- Fragrance
- Yellow 5
- Yellow 6
Highlights
Free of alcoholFree of parabensFree of siliconesFree of mineral oilFree of formaldehyde releasersContains sulfatesContains EU-26 allergensContains fragranceContains essential oils
Key ingredients
- ANTIPLAQUE
- Water
- CLEANSING
- Sodium Laureth Sulfate
- ANTISTATIC
- Cocamidopropyl BetainePolyquaternium-10
- SURFACTANT - FOAM BOOSTING
- Cocamide MEA
- BULKING
- Sodium Chloride
- DENATURANT
- Glycerin
- HAIR CONDITIONING
- Biotin
Other ingredients
PanthenolTocopheryl AcetateAscorbic AcidCitric AcidThiamine NitratePropylene GlycolCitronellolHexyl CinnamalLimoneneLinaloolTetrasodium EDTAMethylisothiazolinoneMethylchloroisothiazolinoneFragranceYellow 5Yellow 6
Skim through
| Ingredient | What it does | Irr. · Com. | Rating |
|---|---|---|---|
| Water | ANTIPLAQUE, SKIN CONDITIONING, SOLVENT | 0 · 0 | Green |
| Sodium Laureth Sulfate | CLEANSING, SURFACTANT - EMULSIFYING, FOAMING, SURFACTANT - CLEANSING | 2 · 0 | Green |
| Cocamidopropyl Betaine | ANTISTATIC, CLEANSING, SURFACTANT - FOAM BOOSTING, HAIR CONDITIONING, SURFACTANT - CLEANSING, VISCOSITY CONTROLLING, SKIN CONDITIONING - MISCELLANEOUS | 0 · 0 | Green |
| Cocamide MEA | SURFACTANT - FOAM BOOSTING, VISCOSITY CONTROLLING | 0 · – | Yellow |
| Polyquaternium-10 | ANTISTATIC, FILM FORMING | 0 · 0 | Green |
| Sodium Chloride | BULKING, FRAGRANCE, ORAL CARE, VISCOSITY CONTROLLING | 0 · 0 | Green |
| Glycerin | DENATURANT, HAIR CONDITIONING, HUMECTANT, ORAL CARE, SKIN PROTECTING, SOLVENT, VISCOSITY CONTROLLING, PERFUMING, FRAGRANCE, SKIN CONDITIONING - HUMECTANT | 0 · 0 | Green |
| Biotin | HAIR CONDITIONING, SKIN CONDITIONING - MISCELLANEOUS | — | Green |
| Panthenol | ANTISTATIC, HAIR CONDITIONING, SKIN CONDITIONING | 0 · 0 | Green |
| Tocopheryl Acetate | ANTIOXIDANT, SKIN CONDITIONING | 0 · 0 | Green |
| Ascorbic Acid | ANTIOXIDANT, BUFFERING, FRAGRANCE, SKIN CONDITIONING | 2 · 0 | Green |
| Citric Acid | BUFFERING, CHELATING, FRAGRANCE | 1 · 0 | Green |
| Thiamine Nitrate | Not decoded yet | — | — |
| Propylene Glycol | HUMECTANT, FRAGRANCE, SOLVENT, VISCOSITY CONTROLLING, SKIN CONDITIONING - HUMECTANT, SKIN CONDITIONING - MISCELLANEOUS | 1 · 0 | Green |
| Citronellol | PERFUMING · 限制 III/86 | 1 · 0 | Yellow |
| Hexyl Cinnamal | PERFUMING · 限制 III/87 | 1 · 0 | Yellow |
| Limonene | DEODORANT, SOLVENT, PERFUMING · 限制 III/88 III/167 III/168 | 1 · – | Yellow |
| Linalool | DEODORANT, PERFUMING · 限制 III/84 | 1 · 0 | Yellow |
| Tetrasodium EDTA | CHELATING | 0 · 0 | Green |
| Methylisothiazolinone | PRESERVATIVE · 限制 V/57 V/39 | 5 · 0 | Yellow |
| Methylchloroisothiazolinone | PRESERVATIVE · 限制 V/39 | 2 · – | Yellow |
| Fragrance | 矫味剂,增香剂 | — | Yellow |
| Yellow 5 | 着色剂 | 2 · 0 | Green |
| Yellow 6 | 着色剂 | 0 · 0 | Green |
Ingredients explained
- Water
- Primary solvent and base; requires preservative system to prevent microbial growth
- Sodium Laureth Sulfate
- Common anionic surfactant, strong foam but drying; check cationic compatibility, high eye irritation
- Cocamidopropyl Betaine
- Cocamidopropyl betaine; zwitterionic co-surfactant reducing irritation and boosting foam, common in mild cleansers.
- Cocamide MEA
- Foam booster and thickener for cleansing products; 1-3%, check compatibility with anionic surfactants
- Polyquaternium-10
- Cationic polymer for fabric or hair smoothness; generally low irritation but may conflict with other cationic actives
- Sodium Chloride
- Salt for gel viscosity control; used as precipitant in soaps
- Glycerin
- Workhorse humectant at 3–10%; tacky at high levels, pair with occlusives
- Biotin
- Vitamin B7 nutrient claimant; topical effect limited, use at 1-20 ppm.
- Panthenol
- Panthenol (vitamin B5) at 1–5%; moisturizing and reparative, supports barrier recovery
- Tocopheryl Acetate
- Vitamin E derivative antioxidant at 0.1–1%; more stable than tocopherol, store protected from light
- Ascorbic Acid
- Vitamin C, potent antioxidant requiring acidic environment for stability; oxidizes and discolors easily, needs light and air protection, concentration 1-10%, pure L-ascorbic acid is more irritating.
- Citric Acid
- Buffer and chelator at 0.1–2%; adjusts pH, may irritate sensitive skin at low pH
- Thiamine Nitrate
- Not decoded yet
- Propylene Glycol
- Polyol humectant at 3-10%; hygroscopic, slight tackiness, mild irritation at high conc., verify preservative efficacy, no allergen.
- Citronellol
- Citronellol for fragrance; EU 26 allergen, labeling required above 0.001%.
- Hexyl Cinnamal
- Common fragrance component (jasmine/vanilla note); listed EU allergen, requires labeling at >10ppm (leave-on).
- Limonene
- Natural fragrance solvent, EU allergen; poor photostability
- Linalool
- Natural fragrance component at ≤0.05%; one of EU 26 allergens, caution for sensitive skin
- Tetrasodium EDTA
- Chelator removing metal ions to enhance antioxidant and preservative efficacy; very low usage, typically 0.05-0.1%, no direct skincare function.
- Methylisothiazolinone
- Strong preservative; high allergy risk, EU restricted for leave-on products, high formulation risk
- Methylchloroisothiazolinone
- Preservative (MCI); highly sensitizing, use only in rinse-off, avoid leave-on products.
- Fragrance
- Fragrance; concentration must control allergen risk, label specific components
- Yellow 5
- Synthetic dye for color; known allergen, may irritate sensitive skin.
- Yellow 6
- Synthetic water-soluble dye; potential allergen, use with care in sensitive skin, often needs stabilizers.
Source: full ingredient list published on the product label, collected 2026-09-20. Ratings are our internal reading, not a regulatory conclusion. · Product page
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