The integumentary system is the body's largest organ. It can also be a woman's biggest nightmare. The epidermis and its care is one of the most ubiquitous concerns of women as they age. Vitamin C is used in skin care to help prevent premature aging and damage from the suns rays. The antioxidant properties of Vitamin C allows it to bond with and remove damaging radicals in the skin from pollution, cigarette smoke and other sources. Vitamin C is also a necessary part of the body's production of collagen which is the fiber that makes tissues strong and elastic. Thus the use of Vitamin C in a daily skin care program is thought to help make your skin look full and firm.Taking care of your skin should also be one of the biggest concerns of men since their incidence of melanoma is far greater than that of women and they are starting to spend more and more time in the tanning salons. Although men have the greatest statistical incidence of melanoma some dermatologists fear that the popularity of sun tanning beds in the female population may be bringing with it an increased development of melanoma in women. With the passage of time there may be an alarming tendency of young women to develop the sometimes fatal disease. One thing is certain though, UV rays whether from tanning beds or sun exposure is damaging in excessive amounts. Furthermore, when the sun is involved sun screen really is mandatory for prevention of its damaging effects both medical and cosmetic.But even with the best preventative measures time does take its toll. Solar radiation, pollution and exposure to various toxins damage the cells prematurely aging the skin and the natural aging process leads to a reduced production of collagen. For some corrective measures may be required. Many approaches and strategies are used in the time reversal strategy known as skin care. Alpha hydroxy acids (AHA) are a popular ingredient in many over the counter skin care products. The theory being that the acids peel away the outermost layer of skin exposing the new softer tissues underneath and the skin appears to renew and rejuvenate.Vitamins can be absorbed through the skin in creams and lotions, particularly Vitamins A and D. Vitamin C can be absorbed by the skin but the best form is one called L-ascorbic acid. This is a product that breaks down very easily especially in sunlight giving it a short shelf life. It is important to buy small amounts in dark colored or brown bottles and keep it in a dark storage place. This works by being absorbed into the epidermis and promoting the production of collagen. It also works as an antioxidant by neutralizing free radicals in the body. Because of its absorption this form of Vitamin C will not wash away but remain in the skin.