> [ZINC OXIDE LEAST HARMFUL SUNSCREEN] Yes. > [Considering that [[aspirin]] works in some ways like niacinamide, would niacinamide help prevent sunburn?] I haven't tried niacinamide for sun protection; the fact that it can lighten [[skin]] pigment might mean that it's blocking some free radical processes. > [Sun damaged [[skin]]] Topical [[vitamin A]] with [[vitamin E]] would be protective. [[Progesterone]] and [[caffeine]] are other powerfully protective things. Both [[caffeine]] and [[progesterone]] are protective topically as well as orally. > It's [ASPIRIN] protective against sun aging, like [[vitamin E]]. I think the most helpful thing for wrinkles is [[pregnenolone]] (internally), since it increases the tone of connective tissues, causing the fascia and similar tissues to contract, if they have been sagging from a metabolic energy problem (caused by accumulated [[PUFA]]).