Ingredient · dataset v56
Arachidyl Alcohol and fungal acne
May trigger · Limited evidence
Why it's a potential trigger
A straight C20 fatty alcohol; covered by the fatty-alcohol consistency bar (between the ruled C18 and C22 cases).
Bar extension - confirm in review.
Evidence strength
Limited evidence (1/3)
Function
Fatty alcohol
Fatty alcohols: long-chain alcohols mirroring the fatty acids the yeast eats.
Products without this ingredient
- Native Body Wash Cucumber & Mint 18 oz
- Eucerin Dermopure Cleansing Gel
- NYX Professional Makeup Dewy Finish Long Lasting Setting Spray
- Heiltropfen Bentonite Montmorillonite Powder 1 lb
- Garnier Micellar Cleansing Water with Vitamin C 13.5 fl oz
- Almond Clear 2-in-1 Hydrating Gel 4 oz
Related fatty alcohol
- 2-Butyloctanol — May trigger · Limited evidence
- Behenyl Alcohol — May trigger · Limited evidence
- C12-15 Alcohols — May trigger · Limited evidence
- Cetearyl Alcohol — May trigger · Limited evidence
- Cetyl Alcohol — May trigger · Limited evidence
- Hexyldecanol — May trigger · Limited evidence
- Isostearyl Alcohol — May trigger · Limited evidence
- Lauryl Alcohol — May trigger · Limited evidence
Sources
EU CosIng database — search the INCI name
Last reviewed: 2026-10-13 (dataset v56).
Questions
Does Arachidyl Alcohol trigger fungal acne?
We flag it as a potential trigger (limited evidence). That means it belongs to a class the Malassezia yeast is known to feed on — not that every product with it will cause a flare. Concentration, formulation and individual skin chemistry matter.
Does Arachidyl Alcohol feed Malassezia?
Yes: we flag Arachidyl Alcohol as a potential trigger (limited evidence). It belongs to a class Malassezia is known to feed on — not a claim that every product with it causes a flare. Concentration, formulation and individual skin chemistry matter.
How confident is this call?
Limited evidence: A straight C20 fatty alcohol; covered by the fatty-alcohol consistency bar (between the ruled C18 and C22 cases).
Is this medical advice?
No. We screen ingredient lists; we never diagnose, treat, or certify products. When in doubt, ask a dermatologist.
Check a full list containing Arachidyl Alcohol →
Not medical advice: we screen ingredient lists for potential triggers — we never diagnose, treat, or certify products. Dataset v56.