Ingredient · dataset v56
Isodecyl Neopentanoate and fungal acne
No known trigger
Why it's not a known trigger
Isodecyl alcohol (branched C10) esterified to neopentanoic acid (C5); both halves sit below the C12 bar, consistent with the caprylic/capric MCT precedent.
Below-bar call; C12+ on either half would flip it.
Evidence strength
Judged neutral — no trigger evidence
Function
Fatty ester
Fatty esters: split by the yeast’s enzymes into edible fats.
Related fatty ester
- Ascorbyl Palmitate — May trigger · Moderate evidence
- Ascorbyl Tetraisopalmitate — May trigger · Moderate evidence
- Behenyl Acrylate — May trigger · Limited evidence
- Behenyl Behenate — May trigger · Limited evidence
- Bis-Octyldodecyl Dimer Dilinoleate/Propanediol Copolymer — May trigger · Moderate evidence
- Butylene Glycol Dicaprylate/Dicaprate — No known trigger
- Butyloctyl Salicylate — May trigger · Limited evidence
- C12-15 Alkyl Benzoate — May trigger · Limited evidence
Sources
EU CosIng database — search the INCI name
Last reviewed: 2026-10-13 (dataset v56).
Questions
Does Isodecyl Neopentanoate trigger fungal acne?
No known trigger: Isodecyl alcohol (branched C10) esterified to neopentanoic acid (C5); both halves sit below the C12 bar, consistent with the caprylic/capric MCT precedent.
Does Isodecyl Neopentanoate feed Malassezia?
No known link: Isodecyl Neopentanoate is judged with no known trigger. One screened ingredient is not a product verdict — when in doubt, ask a dermatologist.
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 Isodecyl Neopentanoate →
Not medical advice: we screen ingredient lists for potential triggers — we never diagnose, treat, or certify products. Dataset v56.