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Triple Threat: The Three Keys to Fighting Aging Skin

June 2007 issue of Skin Inc. magazine

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With 450 million baby boomers worldwide, it should come as no surprise that treating the signs of aging has blossomed. Latest estimates reveal that this market is now worth billions of dollars, and is anticipated to keep growing at a fast rate.

The causes of aging skin
        The signs of aging—whether they appear on mature skin or prematurely aging skin—can be primarily attributed to ultraviolet (UV) radiation exposure. Although most are familiar with the symptoms of aging skin—wrinkles, rough texture, uneven pigmentation, dehydration and loss of elasticity—less attention is devoted to the processes that occur at a biochemical level to trigger these changes.
        Most anti-aging products attempt to treat the manifestations of aging skin, such as wrinkles and sagging. In reality, there is only so much a person can do to address these issues through the use of topical products. The truth of the matter is that there is no cure for wrinkles. Yet, every time you log on to the Internet or open a magazine, you are bombarded with advertisements for products claiming to deliver the same results as injectable fillers without the use of a needle, or promising to deliver a face lift in a box. In order for clients to have realistic expectations, it is up to you to understand the science behind aging skin and teach them how to address these issues at their source.
        Three primary biochemical reactions take place in the skin to contribute to the structural changes that are associated with aging. Initially, the skin’s antioxidant defense system loses its capacity to fight oxidative stress and the associated reactive oxygen species (ROS)—otherwise known as free radicals—that lead to aging. Combine this with an increase in the destructive matrix metalloproteinase (MMP) enzymes and an associated decrease in collagen synthesis, along with the formation of advanced glycation end products (AGEs), and the result is prematurely aged skin.

ROS
        Free radicals, or ROS, occur naturally throughout a normal body metabolism. They also may be produced as a result of exposure to UV radiation, air pollution, smoking, alcohol and inflammation. ROS are formed when oxygen combines with other molecules resulting in oxygen molecules with an unpaired electron. These are unstable and travel throughout the body wreaking havoc, and causing the oxidation of DNA and structural components in the skin and body. 
        Lipids that make up the membranes of the body’s cells are extremely susceptible to ROS, resulting in lipid peroxidation and damaged membranes. Free radicals can lead to inflammation, including leaky capillaries or telangiectasias, hyperpigmentation, tissue destruction, disease and even cell death.
        Fortunately, the body has natural defense mechanisms, such as antioxidants, to protect its tissues from ROS. However, its natural antioxidant supply often is not plentiful enough to provide adequate protection, especially in the skin. Studies have also demonstrated that exposure to UV radiation can inhibit antioxidant systems, so topical antioxidants are a good option for supplementing the body’s natural means of protection.
 
        Combating ROS. How can you fight ROS in the skin? To scavenge these free radicals, look for antioxidants such as those found in white and green tea, grape seed extract, ascorbyl palmitate, ascorbic acid (vitamin C), glutathione, coenzyme Q10, tocopherol, tocopheryl derivatives (vitamin E), and genestein from soy and licorice. Glucosamine, lactic acid and magnesium ascorbyl phosphate should be sought out in order to fight hyperpigmentation. Many of these plant-derived ingredients are rich in polyphenols that include bioflavonoids, which are not only important antioxidants, but also are anti-inflammatory agents and cell protectants. Although the list of antioxidants in cosmeceuticals is indeed plentiful, these components are only beneficial when helping to prevent future signs of aging; they will not treat existing wrinkles or skin damage, but will reduce inflammation. It is important to note that ROS also lead to the formation of MMPs in the skin.

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