Skin is the largest organ in the body. The skin of a average adult weighs 8-10lbs and covers an area of about 22 square feet. Every inch of skin contains:
650 sweat glands
15 ft blood vessels
12 ft nerves
millions of cells
65 hairs
1,300 nerve endings
155 pressure receptors
100 oil glands
12 cold and heat receptors
6 main functions of the skin are protection, sensation, heat regulation, excretion, secretion, and absorption. The first to develop is touch.  A incredible feature of the skin is it's ability to heal itself.
Take good care of the largest organ with the proper spf (one with zinc oxide and titanium dioxide, no higher then 30), drinking 8+ cups water daily, cleansing and moisturizing once a day, a healthy plant based diet, regular exercise, 7-8 hours rest each night and a facial at least once a month  (its like a workout for the skin).

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Benefits-
1.  Removes all unwanted hair.
2.  Helps make-up products set on the skin better.
3.  Gently exfoliates the skin.
4.  Reduces the amount of hair that grows on the face over time.
5.  Makes toners and other skin care products more effective.
6.  Helps with skin confidence.

How they work: Antioxidants go deep in the skin neutralizing free radicals ( damaged molecules that form from environmental factors such as sun, pollution, smoke and herbicide ) and stopping them from destroying DNA elastin and collagen. Some even stimulate collagen and fade blotches.
How they help the skin: Prevent wrinkles, spots, and protect cells from environmental damage (cancer).
Where to find them: Vitamin E, the most efficient antioxidant available. Vitamin C, also important for the skin helping with the healing process.
To get the benefits for your skin look for products like Dermalogica that have antioxidants in the ingredients, facials that help strengthen and clear the skin, and eat  vegetable oil, seeds, nuts  citrus, tomatoes , peppers, broccoli and greens.