obagi Professional-C™ Serum 10%
obagi Obagi Professional-C™ Serum 10% lists 5 ingredients on its label, 5 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 alcoholFree of parabensFree of siliconesFree of sulfatesFree of mineral oilFree of essential oilsFree of formaldehyde releasersContains EU-26 allergensContains fragrance
Formulation view Aqueous serum with water and propylene glycol, featuring 10% pure L-ascorbic acid and propylene carbonate. Fragrance is added; preservatives are not listed, suggesting reliance on packaging or concentration. Suited for daily antioxidant skincare. Factory observation: 10% vitamin C remains challenging; the absence of standard preservatives makes microbiological control a critical priority.
Key ingredients
- HUMECTANT
- Propylene Glycol
- ANTIPLAQUE
- Water
- SOLVENT
- Propylene Carbonate
- ANTIOXIDANT
- Ascorbic Acid
- 矫味剂
- Fragrance
Other ingredients
Skim through
| Ingredient | What it does | Irr. · Com. | Rating |
|---|---|---|---|
| Propylene Glycol | HUMECTANT, FRAGRANCE, SOLVENT, VISCOSITY CONTROLLING, SKIN CONDITIONING - HUMECTANT, SKIN CONDITIONING - MISCELLANEOUS | 1 · 0 | Green |
| Water | ANTIPLAQUE, SKIN CONDITIONING, SOLVENT | 0 · 0 | Green |
| Propylene Carbonate | SOLVENT, VISCOSITY CONTROLLING | 0 · – | Green |
| Ascorbic Acid | ANTIOXIDANT, BUFFERING, FRAGRANCE, SKIN CONDITIONING | 2 · 0 | Green |
| Fragrance | 矫味剂,增香剂 | — | Yellow |
Ingredients explained
- Propylene Glycol
- Polyol humectant at 3-10%; hygroscopic, slight tackiness, mild irritation at high conc., verify preservative efficacy, no allergen.
- Water
- Primary solvent and base; requires preservative system to prevent microbial growth
- Propylene Carbonate
- Inert solvent and viscosity modifier; often used as penetration enhancer, mild at low levels
- 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.
- Fragrance
- Fragrance; concentration must control allergen risk, label specific components
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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