L-Arginine Skincare: Benefits for Hydration, Skin Barrier Support & Sensitive Skin L-arginine skincare is beginning to receive more attention as consumers look beyond familiar ingredients like hyaluronic acid, niacinamide, ceramides, and peptides and start asking a more fundamental question: What does healthy skin actually use to maintain itself? That question leads directly to amino acids. L-arginine—usually … Continue reading L-Arginine Skincare: Benefits for Hydration, Skin Barrier Support & Sensitive Skin