Zelens Hydration Duo combines two powerhouse serums to give your skin the ultimate hydration boost. The Hyaluron Intense Hydro-Plumping Serum is enriched with hyaluronic acid, a potent hydrating ingredient that deeply moisturizes and plumps the skin. Meanwhile, the Melatonin B12 Advanced Repair Serum is packed with antioxidants and vitamins to repair and rejuvenate the skin, combating signs of aging and environmental damage.