NEOLIFE Combodrop Serum combines high-density pure hyaluronic acid, vitamin C, vitamin A and collagen to provide a highly effective cocktail ingredient that meets all the needs of problematic skin. It repairs flaws in skin texture, such as signs of aging (thin and deep lines), enlarged pores, and environmental and hormonal factors related to skin stains. Can be used with 3-4 week session frequency. Since Dermapen and dermoroller procedures are a bit of painful procedure, we recommend using Neolife Topical Cream plus before application. Combodrop serum can be applied in combination with NEOLIFE skin care creams after conventional or chemical skin care.