1,3-Butylene glycol ek chhota diol hai jo skincare mein humectant, solvent aur viscosity modifier ke taur par kaam karta hai. Yeh skin ka moisture retain karne mein madad karta hai aur product ki texture ko improve karta hai. Iska mild antimicrobial properties bhi hote hain jo product ko preserve karne mein helpful hote hain.