Propylene glycol ek chhota sa glycol molecule hai jo skincare mein humectant, solvent aur penetration enhancer ke taur par use hota hai. Yeh water ko attract karta hai aur doosre ingredients ko dissolve karne mein madad karta hai. Iska matalab skin ko moisture dena aur formula ko better banaane mein kaam aata hai. Yeh ek base/formulation ingredient hai jo skincare products ke main composition ka hissa hota hai.