Achieve bright radiant skin with vitamin c ester serum from perricone md a daytime serum fortified with vitamin c ester an ingredient more easily absorbed than vitamin c that works to deliver natural radiance and smoothness with multi tasking properties the serum is designed for use on the face eyes and lips and instantly boosts radiance targeting dark uneven areas whilst restoring luminosity and visibly firming the skin ideal for those whove experienced the effects of sun damage thi