Hyaclean Hyaluronic Acid at Home Mesotherapy is rich in multiple hyaluronic acid with different molecular level to boost moisture levels and collagen production. This Sterilization level Meso is recommended to combine with Derma Roller or other mesotherapy instruments which can creates micro pathways to epidermis or dermis in the skin for Hyaluronic Acid to better absorbed and help boost both collagen and elastin production. Size:1ml x7 pcs/pack Ingredient: water for injection, hyaluronic acid Skin type: all skin types, especially for people wanting to lessening acne scarring, refining pore, softening fine lines and people who just want to keep skin elastic and plump. Application Using with Derma Roller, pat the product to all over the face first, roll the derma roller back and forth 4-5 times horizontally, vertically and diagonally. Use for at least 1 minute to activate deep-layer cell regeneration.