Dr rashel vitamin c face anti aging face serum pack of 1 and dr rashel vitamin c silk mask 1 pcs , dr rashel vitamin c face serum is light and highly effective. formulated with a high concentration of hyaluronic acid and vitamin c . directions : apply a thin layer of your serum of choice (about a pea-sized amount should do) and massage onto skin until fully absorbed. for best result apply daily after cleansing. pro tip: apply the serum to damp skin to lock in even more hydration! dispense a few drops on fingertips and apply all over your face, focusing on any problem areas, until the product is thoroughly absorbed.