AYA - Zinc Oxide 15mg with Copper (60). Provides zinc and copper which work synergistically and contribute to the normal function of the immune system and the protection of cells from oxidative stress.. Zinc also contributes to the maintenance of normal hair, nails and skin, promoting general wound, ulceration and scar healing. It also plays a role in fertility and reproduction.. Low levels of zinc may contribute to infertility, poor wound healing and increased susceptibility to infection.