Arginine

Arginine is a semi-essential amino acid that serves as a highly effective pH adjuster in cosmetic formulations, capable of neutralizing acidic ingredients while simultaneously providing skin conditioning benefits. Unlike simple alkaline pH adjusters, arginine enhances skin hydration through its humectant properties and supports the skin's natural moisture barrier. Formulators favor arginine because it offers a gentler alternative to traditional bases like sodium hydroxide, while also contributing to improved skin feel and potential anti-aging benefits through its role in collagen synthesis.