Hyaluronic acid
Sodium Hyaluronate
Hyaluronic acid is a glycosaminoglycan that binds water at up to 1,000 times its molecular weight. Topically applied, it forms a hydrating film on mucosal surfaces and penetrates the upper stromal layer where it integrates with the tissue's native HA matrix. The result is sustained moisture retention, improved tissue compliance, and reduced friction during physical contact. HA also supports keratinocyte and fibroblast activity in the epithelial layers.
Clinical relevance
Primary active for vaginal dryness, vulvovaginal atrophy, and dyspareunia of friction etiology. Mechanism well-supported by clinical evidence covering Studies 1 through 4 on the Clinical Evidence page, including head-to-head comparison with topical estrogen for VVA.