Threonine ek essential amino acid hai jo skincare mein humectant aur skin-conditioning agent ke taur pe use hota hai. Yeh skin ka moisture retain karne mein madad karta hai aur skin's natural moisturizing factor ko support karta hai. Threonine collagen jaisi proteins ke liye building block bhi hai joh skin ko healthy aur hydrated rakhne mein important role play karta hai.