Sophorolipid ek glycolipid biosurfactant hai jo yeast fermentation se banta hai (khaas taur pe Starmerella bombicola se) aur cosmetic formulations mein mild cleanser, emulsifier, aur antimicrobial agent ki tarah kaam karta hai. Yeh biodegradable aur plant-based hota hai, isliye eco-friendly skincare mein kaafi pasand kiya jaata hai.