Yes, the great thing about Vitamin C serum is that you can use it under most products you may use in the morning! If you want to use it as a base under your makeup, the key is to opt for a Vitamin C Serum that is lightweight and not sticky. Also, give your serum ample time to dry before applying your makeup. While there is no magic number because of varying factors, go by feel, it should be easy to tell when the serum is completely absorbed; if not, two or three minutes should be sufficient. We also suggest using a moisturiser or makeup product that contains SPF for added protection against harsh UV rays.