LA ROCHE-POSAY Effaclar Ultra Concentrated Serum is specially formulated for acne-prone skin. Salicylic acid in the formula deeply cleanses pores and controls oil production. Glycolic acid stimulates the skin's renewal processes, gently exfoliating and brightening. Niacinamide supports the skin barrier, soothes, reduces irritation and prevents the formation of dark spots. It also contains La Roche-Posay thermal water, which soothes delicate skin and reduces discomfort. With a light texture,