Use only as directed on unbroken skin. For external use only. Do not drink. Do not inject. Keep out of reach of children. Avoid contact with eyes. Do not combine with other acids and retinol. Discontinue use if irritation occurs. This product contains an alphahydroxy acid (aha) that may increase your skin’s sensitivity to the sun. During the day, always apply a sunscreen while using this product and for a week afterwards. This ampoule is made of glass. Handle with care to avoid any risk of cutting. When it is empty, throw the ampoule away into the recycling bin, then rinse the plastic applicator and let dry, ready for the next use.