Whey protein ek milk se aane wala protein complex hai jo skincare mein use hota hai. Iska main kaam skin ko moisturize karna aur conditioning dena hai. Kuch log kehte hain ki issmein antioxidant properties bhi hoti hain aur skin barrier ko support karta hai. Lekin topical actives ke liye abhi proof bilkul clear nahi hai.