L-Arginine ek amino acid hai jo skincare mein humectant, antioxidant aur pH-adjusting ke taur par use hota hai. Yeh acidic actives ko neutralize karne mein madad karta hai aur skin barrier function ko support karta hai. Isse skin ke hydration mein bhi fayda milta hai aur nitric oxide se related circulation improve ho sakta hai.