Skin Research and Technology · 2026 · rct · n=37
Temporary ion-pairing between lecithin and glycolic acid in a biphasic serum gave 4.19-fold higher epidermal glycolic acid delivery ex vivo with minimal deep penetration; a 2-week double-blind in vivo study (n=37) showed 45.52% greater exfoliation plus improved brightness and hydration without increased irritation.



















