PHA (Polyhydroxy Acids): PHAs are a gentle class of exfoliating acids related to AHAs, featuring a larger molecular size that makes them especially suitable for sensitive skin. They help gently remove dead skin cells, improve skin texture, and support hydration without causing irritation. Ideal for dry, reactive, or sensitive skin, and for those who cannot tolerate AHAs or BHAs.

LHA (Lipo-Hydroxy Acid): LHA is a derivative of salicylic acid (BHA) that provides targeted, gentle exfoliation. It helps support pore clarity and improve skin texture, contributing to a smoother and more refined-looking complexion. Suitable for oily, sensitive, and blemish-prone skin types.