Biotin
molecular structure · PubChem
Synthetic
Skin Conditioner
Hair Care
B Vitamin
Not Clean
1H-Thieno[3,4-d]imidazole-4-pentanoic acid, hexahydro-2-oxo-, [3aS-(3a.alpha.,4.beta.,6a.alpha.)]-
CAS #
58-85-5
Functions
ANTI-SEBUM
HAIR CONDITIONING
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
SKIN CONDITIONING
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Concentration Guide
Industry max
Industry typically uses up to 2.0% in leave-on products (365 products reported). Source: CIR Safety Assessment (CIR Seq 745).
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory0 listings
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng