Ampoules with a high concentration of Glycolic Acid (30%), buffered to pH 4.5-5. In this way it avoids the sensation of burning and itching, while maintaining a high quality of the product and preserving its actions: it helps to reduce wrinkles, hyperpigmentation spots, stretch marks,... being a stimulant of cell renewal. It also causes exfoliation of superficial cells, reactivation of the synthesis of new elastic fibers, and draws water out of the connective tissue underlying the surface layer of the skin: the result will be thinner, clearer and more even skin. How to use: Before applying the glycolic acid solution it is essential to clean the face with cleansing milk and tonic. Apply an ampoule to clean skin, spreading it with a butterfly brush and leave the product to act for about 10 minutes. Collect the excess product with damp sponges, it is not necessary to wash with water since the product is presented in a buffered form.