PHA 5% Exfoliating Lip Serum is a gentle, chemical exfoliant formulated specifically for the lips. It contains 5% gluconolactone, a polyhydroxy acid (PHA), and 1.5% alpha hydroxy acids (AHAs) to smooth and hydrate the lips. Gluconolactone works by breaking down the bonds between dead skin cells, helping to exfoliate the surface without irritation. Thanks to their larger molecular size, PHAs provide mild, surface-level exfoliation, making them ideal for sensitive skin. 

The formula also features over 50% glycerin to deeply hydrate and lock in moisture, along with ectoin to help strengthen the skin barrier and support long-lasting hydration. With regular use, this serum encourages skin renewal, enhancing the texture and appearance of the lips over time.