Good Molecules Daily Brightening Serum gently brightens skin tone. Formulated with beta arbutin and hyaluronic acid, this serum promotes a healthy, youthful complexion. It works to maintain a bright, even-toned complexion without causing irritation. A few drops of this fragrance-free, vegan, and cruelty-free serum can be applied morning and night. Allow it to absorb for 30 seconds before applying oils and moisturizers.