SOS Clarins First. It is a perfecting base that corrects, brightens or unifies the skin tone and fa the makeup. It maintains and lightens the yellow complexion, hydrating and protecting the skin from the harmful effects of the environment. Its formula is fine and light which allows the skin to breathe and hydrate it for 24 hours. The pink tone attenuates signs of tiredness and revitalizes the skin, the peach tone camouflages flaws and unifies the complexion, the coral tone corrects pigment spots and unifies the complexion, the green tone neutralizes redness and calms the skin and the lavender tone revives and illuminates the complexion.