USOLAB Bio Brightening Bleaching AmpouleAchieve brighter, smoother, and more radiant skin with this intensive tone correcting serum, specially formulated to treat hyperpigmentation, dullness, and uneven skin tone. Powered by tranexamic acid, glutathione, and arbutin, this serum visibly fades dark spots, restores clarity, and improves overall skin texture and elasticity. With 5% glutathione, a powerful antioxidant, it supports skin healing and reduces signs of aging. 2% arbutin targets