Obagi c rx c clarifying serum
Obagi obagi c rx c clarifying serum lists 9 ingredients on its label, 9 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 fragranceFree of parabensFree of siliconesFree of mineral oilFree of essential oilsFree of formaldehyde releasersContains alcoholContains sulfates
Formulation view This serum uses water as a base with polyol solvents. Core actives are hydroquinone and ascorbic acid, needing an acidic environment. Arbutin and SD alcohol are included. No broad-spectrum preservative is prominent; stability may rely on the system itself. Suitable for resilient skin. Factory view: solubility stability and packaging light-shielding are critical.
Key ingredients
- ANTIOXIDANT
- HydroquinoneAscorbic AcidArbutin
- 溶剂
- Aqua/Water
- HUMECTANT
- Propylene Glycol
- ASTRINGENT
- Sd Alcohol 39-C
- FRAGRANCE
- Dipropylene Glycol
- SOLVENT
- Propylene Carbonate
Other ingredients
Skim through
| Ingredient | What it does | Irr. · Com. | Rating |
|---|---|---|---|
| Hydroquinone | ANTIOXIDANT, BLEACHING, HAIR DYEING, FRAGRANCE, REDUCING · 限制 II/1339 III/14 | 3 · – | Yellow |
| Aqua/Water | 溶剂 | 0 · 0 | Green |
| Propylene Glycol | HUMECTANT, FRAGRANCE, SOLVENT, VISCOSITY CONTROLLING, SKIN CONDITIONING - HUMECTANT, SKIN CONDITIONING - MISCELLANEOUS | 1 · 0 | Green |
| Sd Alcohol 39-C | ASTRINGENT, SOLVENT, VISCOSITY CONTROLLING | 1 · 0 | Green |
| Dipropylene Glycol | FRAGRANCE, SOLVENT, VISCOSITY CONTROLLING, PERFUMING | 0 · 0 | Green |
| Ascorbic Acid | ANTIOXIDANT, BUFFERING, FRAGRANCE, SKIN CONDITIONING | 2 · 0 | Green |
| Arbutin | ANTIOXIDANT, BLEACHING, SKIN CONDITIONING - MISCELLANEOUS · 限制 III/378 | 0 · 0 | Yellow |
| Propylene Carbonate | SOLVENT, VISCOSITY CONTROLLING | 0 · – | Green |
| Sodium Lauryl Sulfate | CLEANSING, DENATURANT, FOAMING, SURFACTANT - CLEANSING | 4 · 0 | Yellow |
Ingredients explained
- Hydroquinone
- Melanin inhibitor restricted in EU cosmetics; primarily industrial or intermediate use; strict compliance required
- Aqua/Water
- Solvent, formulation base; requires preservation, pure water is microbially prone.
- Propylene Glycol
- Polyol humectant at 3-10%; hygroscopic, slight tackiness, mild irritation at high conc., verify preservative efficacy, no allergen.
- Sd Alcohol 39-C
- Isopropanol-containing denatured alcohol; fast-evaporating, sensitizing risk, limit usage in sensitive skin
- Dipropylene Glycol
- Solvent for essential oils; better humectancy than PEG
- 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.
- Arbutin
- Tyrosinase inhibitor for whitening; typical use 1-2%, comply with EU restrictions on specific arbutins.
- Propylene Carbonate
- Inert solvent and viscosity modifier; often used as penetration enhancer, mild at low levels
- Sodium Lauryl Sulfate
- Strong anionic surfactant, high foam; high irritation risk, avoid in sensitive formulas.
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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