Illuma Serum – Radiance Enhancing Serum for Glowing SkinIlluma Serum Radiance Enhancing Serum for Glowing Skin Illuma Serum by Rk Pharma is a powerful radiance boosting face serum formulated with Vitamin C and Hyaluronic Acid to target dullness, dark spots, uneven skin tone, and fine lines. Lightweight and fast absorbing, it delivers visible results in as little as 4 weeks of consistent use. Vitamin C works as a potent antioxidant to brighten the complexion and help reduce the appearance of dark spots and