Mesoroller Massager Dermaroller is a household device dermarolling to improve the absorption of skin care products applied, triggering a new synthesis of collagen in the skin and remove acne scars, surgery or burn scars, deep wrinkles and stretch marks. Must be used with an anesthetic cream. dermaroller has very fine medical titanium needles. It is pre sterilized so you do not have to be disinfected before use. Dermaroller is sealed and includes a plastic container box for the storage of safely between the two needling sessions. 1. 5mm Dermaroller is safe to be used once every 6 to 8 weeks before applying the functional skin care products. 1. 5 mm needle reaches the lower layers of the skin and triggers the new synthesis needed to get rid of wrinkles, scars and stretch marks collagen. The 1. 5mm dermaroller skin regeneration stimulates benefits removes deep wrinkles reduces acne scars reduces stretch marks and cellulite reduces hyper pigmentation improves the absorption and effectiveness of skin care products pain and discomfort with 1. 5mm dermaroller.