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Cos De BAHA Azelaic Acid 20% ingredients: is it worth it?
This is a high-strength azelaic acid workhorse with solid supporting hydration and soothing, but the 20% level makes it a ‘handle with care’ treatment rather than a casual daily serum.
This is a high-strength azelaic acid workhorse with solid supporting hydration and soothing, but the 20% level makes it a ‘handle with care’ treatment rather than a casual daily serum.
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At 20% and listed second in the INCI, azelaic acid is clearly present at a therapeutically meaningful concentration for acne, redness, and uneven tone, which strongly drives the efficacy score, while the emollient base, humectants, centella derivatives, panthenol, allantoin, and ceramide NP provide barrier support that helps you tolerate that strength; however, the very high azelaic load plus the use of propylene glycol and a basic pH-adjusted system means irritation potential is real, so this is best for experienced users, not sensitive beginners.
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DemythSkin rates Cos De BAHA Azelaic Acid 20% 4.4/5 for efficacy and 4.2/5 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 (11)⌄
FULL INGREDIENT LIST⌄
Water/Aqua, Azelaic Acid, Propylene Glycol, Sodium Hydroxide, Caprylic/Capric Triglyceride, 1,2-Hexanediol, Cetearyl Alcohol, Glyceryl Stearate, Dimethicone, Cetearyl Olivate, Sorbitan Olivate, Betaine, Dimethyl Sulfone, Panthenol, Allantoin, Dipotassium Glycyrrhizate, Centella Asiatica Extract, Madecassoside, Sodium Hyaluronate, Hydrolyzed Hyaluronic Acid, Tocopherol, Ceramide NP, Polysorbate 60, Camellia Sinensis Leaf Extract, Sambucus Nigra Flower Extract, Momordica Charantia Fruit Extract, Leontopodium Alpinum Extract
WHAT EACH INGREDIENT DOES (24)⌄
- Water/Aqua
- Primary solvent
- Azelaic Acid
- Multifunctional treating active
- Propylene Glycol
- Humectant and solvent
- Sodium Hydroxide
- pH adjuster/base
- Caprylic/Capric Triglyceride
- Emollient and texture enhancer
- 1,2-Hexanediol
- Solvent and preservative booster
- Cetearyl Alcohol
- Fatty alcohol thickener/emollient
- Glyceryl Stearate
- Emulsifier and emollient
- Dimethicone
- Silicone emollient and skin protectant
- Cetearyl Olivate
- Emulsifier and texture enhancer
- Sorbitan Olivate
- Emulsifier and stabilizer
- Betaine
- Humectant and osmoprotectant
- Dimethyl Sulfone
- Solvent, possible soothing support
- Panthenol
- Humectant and soothing agent
- Allantoin
- Soothing and skin-conditioning agent
- Dipotassium Glycyrrhizate
- Soothing and antioxidant agent
- Centella Asiatica Extract
- Soothing and barrier-support extract
- Madecassoside
- Soothing centella-derived component
- Sodium Hyaluronate
- Hydrating humectant
- Hydrolyzed Hyaluronic Acid
- Hydrating humectant, smaller weight
- Tocopherol
- Antioxidant and skin-conditioning agent
- Ceramide NP
- Barrier lipid and moisturization support
- Polysorbate 60
- Solubilizer and emulsifier
- Camellia Sinensis Leaf Extract
- Antioxidant botanical extract
EXTERNAL CITATIONS
Azelaic Acid: Several randomized controlled trials support 15–20% azelaic acid for papulopustular acne and rosacea, improving inflammatory lesions and erythema over 12–16 weeks compared with vehicle or other standard treatments.
Panthenol: Clinical and in vitro data indicate panthenol enhances stratum corneum hydration and supports barrier recovery after irritation.
Centella Asiatica Extract: Centella triterpenes such as madecassoside have shown barrier-support and soothing effects in human and in vitro studies, including improved wound healing and reduced irritation markers.
Ceramide NP: Topical ceramides combined with emollients have been demonstrated to improve barrier function and reduce transepidermal water loss in dry and compromised skin.
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 20%: common questions
Is Cos De BAHA Azelaic Acid 20% worth it?
Cos De BAHA Azelaic Acid 20% scores 4.4 out of 5.0 for efficacy (Effective) and 4.2 out of 5.0 for safety (Gentle) on DemythSkin's independent ingredient analysis. This is a high-strength azelaic acid workhorse with solid supporting hydration and soothing, but the 20% level makes it a ‘handle with care’ treatment rather than a casual daily serum.
What are the key active ingredients in Cos De BAHA Azelaic Acid 20%?
Cos De BAHA Azelaic Acid 20% contains these gold-standard actives with strong clinical evidence: Azelaic Acid.
Does Cos De BAHA Azelaic Acid 20% contain fragrance or known irritants?
DemythSkin's analysis found no flagged irritants in Cos De BAHA Azelaic Acid 20%. It scores 4.2 out of 5.0 for safety.
How is Cos De BAHA Azelaic Acid 20% 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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