China cosmetic mein typically Cinchona bark ka extract hota hai, jisme quinine aur related alkaloids hote hain. Topical formulations mein isko small amounts mein use karte hain astringent properties ke liye, antioxidant benefits ke liye, aur scalp ko stimulate karne ke liye. Yeh ingredients usually toner, serum aur hair care products mein milte hain jo skin ko firm karne aur healthy look dene mein madad karte hain.