Skin roller with small needles that promotes blood circulation and allows imperfections to disappear by increasing the production of collagen promoting circulation. Composition: Needle 0.3mm How it work: Helps treat hyperpigmentation: Encourages Collagen and Elastin production. Deep hydration: Helps skincare to penetrate more deeply. How to apply: It is important to cleanse your skin well to remove all impurities and prevent the proliferation of bacteria. Apply a serum to provide the skin with a real concentrate of active ingredients. It is also possible to use the Derma Roller without serum. Roll the Derma Roller in four directions: vertical, horizontal, diagonal, and always in straight lines, never curved. Let it glide over the skin without pressing. only pass 3-4 times on one area. Be careful to avoid the eye area.