O-Cymen-5-ol (jise biosol ya 4-isopropyl-3-methylphenol bhi kehte hain) ek phenolic antimicrobial agent hai jo cosmetics mein preservative ke taur par use hota hai aur odor-causing bacteria ko rokta hai. Yeh bacteria aur fungi dono ke khilaaf effective hai aur commonly skincare products mein add kiya jata hai taaki product ko zyada din tak fresh rakha ja sake aur bad smell na aaye.