Face Serums- Choose from a wide range of Serums & Essence for faces from top brands. Vitamin C Face Serum for Bright, Glowing & Radiant Skin. A serum is lightweight and helps treat skin issues like aging skin, dark spots, blemishes, acne, and dull skin. The genesis of these face serums is to fight several skin problems like dull skin, oily skin, aging, skin, etc.