Lightweight serum with rice bran and alpha arbutin. Formulated for dull skin, uneven tone, and hyperpigmentation. The Glow Deep Serum has been specially developed for dull skin with an uneven tone and hyperpigmentation. 68% rice bran water and 2% alpha arbutin help even out the complexion and contribute to a new radiance. Vegan. Suitable for all skin types. KEY INGREDIENT: Rice. Rice has always played a vital role in Korea, both as a staple food and in skincare. As far back as the Joseon Dynasty, rice bran water was used in the same way as our current toners and was called beauty water. Rice is rich in amino acids and minerals, so it hydrates dry skin. Alpha arbutin. Alpha arbutin inhibits tyrosinase activity, which affects melanin production in the skin. It is also known to be 10 times more potent than regular beta-arbutin. Other ingredients of Heroniacinamide include panthenol and Croix Lacryma-Jobi Ma-Yuen seed extract.