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I used fruit to illustrate the oxidation process, otherwise known as rotting, which is similar to tanning. Oxidation, rust, rot, and tanning are analogous. Tan on skin looks lovely and is deceiving because you don't see its ravages for years to come.
In the 5 day after photo I was amazed to watch the progress. The slice that still looks somewhat appetizing in the after photo had sun screen with 18% zinc and vitamin C applied to it. I took the before photos, waited a few hours then took the after photos. They definitely began to turn brown, except for the sun screen protected piece. When I was ready to leave the beach, I decided not to toss the apple slices out because I was curious about the sun screen on the apple slice and what would happen over time. As I mentioned, in the after photo the slices are 5 days old and the slice on the left looks amazingly fresh compared to the oxidized, rotted, tanned - right apple slice. The damage continued and it does on your skin too. It's called aging and the sun just moves that along faster than birthdays.
Most cooks understand oxidation. You need to squeeze lemon juice on your fruit or vegetables before cooking so they don't turn brown, who wants to be served "Tanned" food at the table! The secret to preventing oxidation or rust/rot caused by oxygen is to provide a layer of protection between the target and the air or oxygen. Translated, this could be primer on your deck, a layer of paint on metal objects, a quick squeeze of lemon juice on your fruit and sun screen on your body. Sealed, the target is protected from oxygen and the oxidation process. You reduce the aging process all around.
What exactly is a sun tan? You say great color, you look healthier?" At the end of the summer it begins to look like leather to me, dead skin without luster or luminosity, you look older. Luminous skin is younger looking skin, it has vitality. In my opinion, skin is the most beautiful organ of the human body. It really is the skin and it's arrangement that attracts us to one another. It also protects us and holds us together!
Tanning is skin damage put pure and simply. Your skin turns brown as a result of the body's protective mechanism swinging into action from DNA damage. It is a reaction of pigmentation, (melanin) combined with oxygen to create an oxidation state. But in the process of the skin trying to protect itself, it is damaged. The oxidation process creates free radicals; loss of an electron that creates a chain reaction in the skin, depleting collagen which results in aging wrinkles and volume loss leading to lax and sagging skin. Tanning speeds the aging process radically. The cells can also mutate. Studies suggest that exposure to ultraviolet radiation (UVA and UVB) is one of the major contributors to the development of melanoma and skin cancers.
Image of collagen fibers, it's the protein matrix that supports the skin and keeps the skin lifted.
Also looks like a house of cards
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