Quote: (03-28-2015 08:20 AM)Basil Ransom Wrote:Growing up surfing in Hawaii in the 70's zinc oxide was the only sunscreen that existed.
I decided to make my own sunscreen, using zinc oxide as the primary active ingredient. Chemical sunscreen, some allege, is a hormone disruptor. The mineral, non-chemical sunscreen I found was pretty expensive, and mineral sunscreen is pretty easy to make at home apparently.
Sunscreens sold in the U.S. currently carry a single SPF rating, which measures only the sunscreen’s protection against Ultraviolet-B (UVB) radiation, the primary cause of sunburn. However, Ultraviolet-A (UVA) rays penetrate the skin more deeply, causing the skin to age more rapidly. And both forms of ultraviolet radiation can cause skin cancer.
Sunscreens in America are not allowed to contain the ingredient which blocks the more harmful UVA rays. Buy the more expensive European stuff.