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Cos De BAHA Azelaic Acid 10% Serum ingredients: is it worth it?
A legitimately useful azelaic-acid serum, but not a miracle treatment—and its unknown pH limits the score.
A legitimately useful azelaic-acid serum, but not a miracle treatment—and its unknown pH limits the score.
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The 10% azelaic acid is the genuine efficacy driver and is relevant for acne, redness, and uneven pigmentation; panthenol, propylene glycol, propanediol, and sodium hyaluronate support hydration, while niacinamide may add barrier and tone benefits. The formula has no disclosed pH, so azelaic-acid performance cannot be fully judged, and the low-position botanical extracts should not materially raise the score. With a water-based formula, no obvious fragrance, and a meaningful active concentration, efficacy is 4.0/5 rather than exceptional.
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DemythSkin rates Cos De BAHA Azelaic Acid 10% Serum 4.0/5 for efficacy and 4.6/5 for safety.
ACTIVE INGREDIENTS BY TIER
Gold Standards
High clinical proof | Skin-transformativeReliable
Proven resultsPotent
Developing evidenceOverhyped | Marketing
Hype | Limited dataDocumented Irritants
Evidence-backed flagFORMULATION BASE (6)⌄
FULL INGREDIENT LIST⌄
Aqua, Propylene Glycol, Azelaic Acid, Polysorbate 20, 1,2-Hexanediol, Propanediol, Panthenol, Niacinamide, Aloe Barbadensis Leaf Extract, Sodium Hyaluronate, Sodium Citrate, Camellia Sinensis Leaf Extract, Momordica Charantia Fruit Extract, Sambucus Nigra Flower Extract, Leontopodium Alpinum Extract
WHAT EACH INGREDIENT DOES (15)⌄
- Aqua
- Solvent and formula base
- Propylene Glycol
- Humectant and solvent
- Azelaic Acid
- Acne and pigment active
- Polysorbate 20
- Solubilizer and emulsifier
- 1,2-Hexanediol
- Humectant and preservative booster
- Propanediol
- Humectant and solvent
- Panthenol
- Humectant and soothing agent
- Niacinamide
- Barrier and tone-support ingredient
- Aloe Barbadensis Leaf Extract
- Soothing botanical extract
- Sodium Hyaluronate
- Humectant moisture binder
- Sodium Citrate
- pH adjuster and buffer
- Camellia Sinensis Leaf Extract
- Antioxidant botanical extract
- Momordica Charantia Fruit Extract
- Botanical conditioning extract
- Sambucus Nigra Flower Extract
- Botanical antioxidant extract
- Leontopodium Alpinum Extract
- Botanical antioxidant extract
EXTERNAL CITATIONS
Azelaic Acid: Cos De BAHA official product listing identifies a 10% concentration and claims acne, redness, and uneven-tone support.
Niacinamide: Cos De BAHA official product listing includes niacinamide in the formula.
Panthenol: Cos De BAHA official product listing includes panthenol in the formula.
Sodium Hyaluronate: Cos De BAHA official product listing includes sodium hyaluronate in the formula.
DISCLAIMER: THIS ANALYSIS IS FOR INFORMATION ONLY. NOT MEDICAL ADVICE. AI-GENERATED DATA BASED ON PUBLICLY AVAILABLE INGREDIENT LISTS. VERIFY WITH A MEDICAL PROFESSIONAL.
Cos De BAHA Azelaic Acid 10% Serum: common questions
Is Cos De BAHA Azelaic Acid 10% Serum worth it?
Cos De BAHA Azelaic Acid 10% Serum scores 4.0 out of 5.0 for efficacy (Effective) and 4.6 out of 5.0 for safety (Very Gentle) on DemythSkin's independent ingredient analysis. A legitimately useful azelaic-acid serum, but not a miracle treatment—and its unknown pH limits the score.
What are the key active ingredients in Cos De BAHA Azelaic Acid 10% Serum?
Cos De BAHA Azelaic Acid 10% Serum contains these gold-standard actives with strong clinical evidence: Azelaic Acid.
Does Cos De BAHA Azelaic Acid 10% Serum contain fragrance or known irritants?
DemythSkin's analysis found no flagged irritants in Cos De BAHA Azelaic Acid 10% Serum. It scores 4.6 out of 5.0 for safety.
How is Cos De BAHA Azelaic Acid 10% Serum scored?
DemythSkin grades every product on two independent scores: efficacy (whether the ingredients have clinical evidence of working) and safety (irritation and sensitisation risk). Ingredients are graded S through D against a database of over 3,000 compounds. Brand and price are not part of the score, and no brand pays for one.
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