Tuesday, August 9, 2011

Aging and Antioxidants

Antioxidants are all the rage these days in cosmeceutical skincare products and are generally natural substances made up of vitamins and minerals. They have the ability to fight "free radicals" (unstable compounds that attack human cells and damage DNA). And we know that damaged skin cells can lead to accelerated aging in the form of wrinkles, dry skin, dark circles under eyes, dull skin, and more.
Free radicals are in the air we breathe, the foods we eat, sunlight, and pollution -- basically, just about everywhere. Eating foods rich in antioxidants is one way to ward them off.  Another is to apply them on the skin, where they can seep underneath to strengthen skin cells and keep them healthy.
The antioxidants most shown to repair damage and slow the aging process include your vitamins A, C, E, Beta Carotene, Lutein, Lycopene, and Seleneium just to name a few. The following list is a just a few ingredients that are now popping up in skincare products to help you stay on top of your game :

Acai Oil

You may have heard all the buzz about the role that the antioxidant acai plays in a healthy diet. The new "superfruit" -- blue berries, native to Central and South America -- are filled with antioxidants, more than those found in other berries. Cold-pressing acai berries extracts the oil, which may fight aging by healing sun damage and smoothing wrinkles. Antioxidant levels in acai oil remain high, even after it's stored. While studies have yet to confirm the benefits of acai oil on the skin, it is being used in masks, creams, cleansers, exfoliating scrubs, body butters, and serums.

Alpha-Lipoic Acid

Alpha-lipoic acid has been called a "universal antioxidant" because it's both water- and fat-soluble. That makes it able to penetrate skin-cell membranes at all levels to protect them from free radicals, keeping the body and its skin strong. Promoted as a primary ingredient in many skin-care products, alpha-lipoic acid can erase fine lines and wrinkles, diminish pores, and give skin a healthy glow.


A 2002 study showed that caffeine applied to the skin of mice may fend off skin cancer, attacking tumors before they fully form and healing the skin. Since then, skin-care companies have worked furiously to add it to their products, and it is now available in lotions and creams.


Vitamin A and its derivatives are powerful and proven antiaging antioxidants. Retinol is a topical ingredient proven to promote collagen production and plump out skin, reducing fine lines and wrinkles. It also improves skin tone and color, and reduces mottled patches (hyperpigmentation) on the skin.
Many dermatologists prescribe retinol's stronger counterpart, tretinoin, or similar products to slow skin aging, improve irregular pigmentation, and clear up acne. Over-the-counter products containing retinols may be weaker, but are still effective in improving skin appearance.
Although retinol hydrates the lower layers of the skin (the dermis and hypodermis), it sometimes causes the top layer (the epidermis) to become dry and flaky. Be sure to wear moisturizer when using it or speak to your dermatologist about alternatives.

Vitamin C

As you age, your body slows down its production of collagen and elastin, which keeps skin strong, flexible, and resilient. Evidence suggests that the antioxidants found in vitamin C may stimulate the production of collagen and minimize fine lines, wrinkles, and scars.
Vitamin C is being added to skin-care products such as creams and lotions. This is one ingredient that may work best when eaten, so stock up on oranges and broccoli. If you want to use a topical vitamin C lotion, ask your dermatologist which one would be right for you.

CoEnzyme Q-10 (CoQ-10)

Your body naturally produces CoQ-10 to neutralize free radicals in cells, but as you age, the levels of CoQ-10 go down. That may make skin cells more susceptible to damage by free radicals. That's the rationale behind the use of the antioxidant in skin-care products such as toners, gels, and creams, to be used alone or with a moisturizer. One study shows that CoQ-10 helps reduce wrinkles around the eyes (crow's feet).
CoQ10 is bright orange, so products containing it will be orange or yellow.

Other Popular Ingredients

More and more, skin-care and cosmetics companies are incorporating natural components such botanicals into their product lines. The following are some of the most common new ingredients.

Alpha-hydroxy Acids (AHAs)

This group of natural-based acids found in a vast number of skin-care products includes glycolic, lactic, citric, and tartaric acids. Glycolic acid was the original AHA and remains popular for its ability to remove dead skin cells and leave skin smoother, softer, and more radiant.
AHAs are used to exfoliate the skin, reducing fine lines, age spots, acne scars, and irregular pigmentation. Peels with higher concentrations of AHAs are usually administered by an esthetician or dermatologist, but you can use lower concentrations -- between 5% and 10% -- in creams or lotions on a daily basis. To help avoid irritated skin, start with a low concentration and apply every other day, gradually increasing to every day. Even at lower doses, however, the acids may irritate and dry skin, as well as increase sensitivity to the sun. Doctors recommend using moisturizer and sunscreen when using any products that contain AHAs.

Salicylic Acid

Salicylic acid is used in many over-the-counter and prescription products to treat acne. It penetrates pores and reduces blackheads and whiteheads, with less irritation than may occur with alpha hydroxy acids. Like AHAs, salicylic acid exfoliates the skin, which can reduce signs of aging.
If you are allergic to salicylates (found in aspirin), you shouldn't use salicylic acid. And pregnant or nursing women should ask their doctor before using any product with salicylic acid.

Hyaluronic Acid

Hyaluronic acid is incorporated into skin-care products to reduce the effects of aging. Your body produces hyaluronic acid naturally, keeping tissues cushioned and lubricated. It's found in skin, joint fluid, and connective tissues. Age, smoking, and an unhealthy diet lead to drops in production over time.
Products containing hyaluronic acid may help smooth out skin. It's especially effective when combined with vitamin C products.

Green Tea Extract

Like antioxidants, the polyphenols found in tea also have been shown to fight free radicals. Drinking green tea may help ward off cancer, infection, and cardiovascular disease.
Early studies have found the ingredients in tea can reduce sun damage and may protect skin from skin cancer when applied topically. Using green tea extract under sunscreen may yield a double dose of protection. An anti-inflammatory, polyphenols in creams and lotions may also slow signs of aging and reduce sagging skin and wrinkles.

No comments:

Post a Comment