Before you spend money on glutathione, read this first. Topical, oral, injectable what actually works and what's just marketing? #funskincare #funingredientsinfographic101 15 days. One bottle. Real glow. , Our Glutathione Serum works beneath the surface to brighten, even out tone, and bring your skin back to life., Because skincare should show, not just promise., We tried 5 glutathione products and theres 3 that made the cut , Brightening potential? Still a bit of a mystery, Also keep in mind an unstable, short shelf life. Fridge recommended , Would you NOW Foods Glutathione Skin Brightener Cream 2 fl. oz.