Dr. Elvish Pure Vitamin C Serum Treatment. Reveal your radiance with Dr. Elvish™ Pure Vitamin C treatment. It is a serum that makes your skin appear radiant. It helps refresh and renew your skin cells for a healthy appearance. The concentrated, non-greasy formula quickly absorbs the skin, melting into it and providing it with a wide range of beneficial elements to appear smoother, more moisturized and radiant.