Zinc Oxide: 5% minimum; 10-20% is ideal. It is more common to see 2-7% concentrations. 25% is the legal maximum. Anything at this level in a cream form will be very thick and uncomfortable for daily wear on the face. Unless you are extremely photosensitive, this level would be more appropriate for intense sunshine, e.g. trekking in the desert, skiing, or hiking at high altitude.Is zinc the best sunscreen?
Since zinc has calming and soothing properties, it would be the best sunscreen to use for that situation. Zinc oxide was also used as a skin protectant and as an ingredient to heal wounds centuries ago, so it’s no surprise it’s now used in sunscreen for just that very reason.How does zinc oxide sunscreen protect you from free radicals?
Zinc oxide sunscreen is the key to avoiding sun damage from free radicals. Free radicals are tiny atoms with teeny-tiny, unpaired electrons. Without a partner, these electrons become highly unstable and look for heat.Why is zinc important in sunscreen?
There are several ways that zinc oxide works on the skin to block sun damage from UV light, making it a better choice to chemical skincare products: Because zinc is a mineral, it has the ability to sit atop the skin and reflect the sun by scattering away ultraviolet rays.