Ingredient · dataset v56
Threonine and fungal acne
No known trigger
Why it's not a known trigger
A plain amino acid; nitrogen alone is not flaggable under the urea-v4 rule. Same basis as the ruled neutral Serine/Arginine.
Evidence strength
Judged neutral — no trigger evidence
Function
Amino acid
Related amino acid
- Alanine — No known trigger
- Aspartic Acid — No known trigger
- Carnitine — No known trigger
- Carnosine — No known trigger
- Creatine — No known trigger
- Ectoine — No known trigger
- Glutamic Acid — No known trigger
- Glutathione — No known trigger
Sources
EU CosIng database — search the INCI name
Last reviewed: 2026-10-13 (dataset v56).
Questions
Does Threonine trigger fungal acne?
No known trigger: A plain amino acid; nitrogen alone is not flaggable under the urea-v4 rule. Same basis as the ruled neutral Serine/Arginine.
Does Threonine feed Malassezia?
No known link: Threonine 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 Threonine →
Not medical advice: we screen ingredient lists for potential triggers — we never diagnose, treat, or certify products. Dataset v56.