Moisturizing is important because the skin survives by carrying out hundreds of biochemical reactions. The reactions are chemical transactions involving molecules, and most of these reactions only proceed if water or oil are present.
Lack of water in or around cells disrupts normal metabolism and tissue repair, and therefore dehydrated skin is less able to repair and regenerate itself and is more susceptible to damage. However, with hundreds of moisturizers on the market, it is important to know which ingredients to look for, and which skin care products to avoid. Choosing the right moisturizer leads to firmer, toned skin and the prevention of aging. Read more »
Sagging facial skin and loss of feature definition are normal parts of aging. There are several reasons why skin on the face loses its youthful tightness, or facial contours, over the years. One reason is that as skin ages, it loses collagen and elastin, which are both proteins that keep the skin flexible and tight. This results in skin losing its bounce back ability. 
