What Does Thiamidol Do in Skin Care Products? Skin Type Solutions Eucerin Hyaluron Filler Elasticity 3D Serum Thiamidol Reduce Wrinkles 30 ml. eBay Hyperpigmentation and uneven skin tone are common concerns and there are over the counter ingredients that can help support clearer, more even looking skin., From Thiamidol to Melasyl, Glycolic Acid, Innovations in Skin Lightening: New Topicals for Hyperpigmentation PRIME Journal What is Thiamidol? Thiamidol is a patented ingredient by Beiersdorf that helps to reduce dark spots and hyperpigmentation. Proven in 70+ clinical studies to reduce hyperpigmentation and prevent it from reappearing I layer multiple brightening ingredients to keep my skin tone even and fade dark spots. In the mornings, I use a vitamin C antioxidant serum + thiamidol, and (pre pregnancy) a retinoid at