Sagging skin: Alpha hydroxy acids

Alpha hydroxy acids (such as glycolic acid) come in different forms including acid toners, exfoliating cleansers, serums and masks. These are useful for sagging skin as they perform a light chemical exfoliation which removes the topmost layer of dead skin cells, allowing the treatment products you use after them to be absorbed more deeply and evenly across the skin – in short, using an alpha hydroxy acid improves the effectiveness of the other products you use after it.