alpha-hydroxy acid

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alpha-hydroxy acid

(ăl′fə-hī-drŏk′sē)
n. Abbr. AHA
Any of various acids, such as citric acid or glycolic acid, that contain a hydroxyl group adjacent to the carboxyl group and are often used in exfoliants and other cosmetics.

alpha-hydroxy acid

Abbreviation: AHA
Any of a class of water-soluble acids derived from fruit or milk, having a hydroxyl moiety in the first position in the molecule. AHAs are used in chemical peels and other skin care products to remove the outer layer of the epidermis. This chemical exfoliation is promoted for its cosmetic effects on wrinkled or sun-damaged skin.
See also: acid
References in periodicals archive ?
5 Cell-stimulating Alpha-hydroxy Acids (AHA's): Glycolic acid is the strongest of the AHA's and is very effective in exfoliating the skin.
"Alpha-hydroxy acids, sometimes known as fruit acids because they are found naturally in fruit, were truly the first cos-meceutical ingredients," he told HAPPL "They are more active than cosmetics, but don't have the uncomfortable or harmful side effects that drugs do."
"Few 100 per cent organic soaps exist on the market today and nothing can beat the unique properties of camel milk which is rich in anti-oxidants and alpha-hydroxy acids that offer unique anti-ageing properties reducing ageing spots and pigmentation while making the skin plump and smooth with less wrinkles," said Monal Zeidan, co-founder of camelmilksoap.com.
Other active ingredients that may help combat signs of aging include alpha-hydroxy acids (AHAs), which remove the upper layer of skin and stimulate the growth of new skin, and peptides, small protein fragments that may stimulate collagen production.
Alpha-hydroxy acids (AHAs), namely glycolic acid (from sugarcane), are in many wrinkle creams and exfoliators.
The "get gorgeous" Herb Tea for Clear Skin is rich in both antioxidants and natural alpha-hydroxy acids. It features skin soothing chamomile flowers with anti-inflammatory azulene, orange peel with bioflavonoids to strengthen veins and cell walls, hibiscus flowers for vitamin C, hormone-balancing chaste berry (so hormonal surges don't cause skin to break out) and cleansing burdock root.
For instance, he explains why alpha-hydroxy acids soften the appearance of wrinkles but don't eliminate the underlying problem.
ALPHA-HYDROXY ACIDS: These remove dead skin cells to reveal smoother, younger-looking skin.
A moisturiser's most basic job, therefore, is to supply the skin with moisture,although creams today contain additional extras such as alpha-hydroxy acids (AHAs,also known as fruit acids), vitamins, enzymes and liposomes.
Now, here's the good part: If you start smoothing on creams that contain alpha-hydroxy acids or vitamin C (acne and anti-aging lotions often have them) while the marks are still pink, they'll fade faster, says dermatologist Dr.
`Evening is the best time to repair any damage, with Vitamin A and AHAs (alpha-hydroxy acids), and occasionally I recommend a treatment such as microdermabrasion (from pounds 95) or MD Formulations Glycolic Facial (from pounds 45) - these boost the effect of whatever they're using at home.
Alpha-hydroxy acids are organic acids derived from fruit acids (Taffe, 1997).