hydroxy acid


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hydroxy acid

n
1. (Elements & Compounds) any acid, such as sulphuric acid, containing hydroxyl groups in its molecules
2. (Elements & Compounds) any of a class of carboxylic acids that contain both a hydroxyl group and a carboxyl group in their molecules
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

hydrox′y ac′id


n.
an organic acid containing both a carboxyl and a hydroxyl group.
[1895–1900]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.hydroxy acid - any acid that has hydroxyl groups in addition to the hydroxyl group in the acid itself
acid - any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
hydroxybenzoic acid - a crystalline derivative of benzoic acid
juniperic acid - a crystalline acid found in the exudations of some conifers
2-hydroxybenzoic acid, salicylic acid - a white crystalline substance with a bitter aftertaste; used as a fungicide or in making aspirin or dyes or perfumes
tartaric acid - an acid found in many fruits; used in soft drinks and confectionery and baking powder
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Opt for exfoliators with alpha hydroxy acid (AHA) or beta hydroxy acid (BHA).
Acne medications prescribed by a dermatologist can also treat blemishes, or look for over-the-counter products with ingredients like benzoyl peroxide, salicylic acid and alpha hydroxy acid. (Just don't pop your pimples, as this can lead to scars unless done by a dermatologist or a professional esthetician.) If you have a history of acne, it's also important to rule out possible underlying problems, such as rosacea or hormonal issues.
Lactic acid is an alpha hydroxy acid, naturally found in yogurt, buttermilk or sour cream and some cottage cheeses.
Salicylic: Best for acne Salicylic acid is an oil-soluble beta hydroxy acid (BHA) and it can help prevent clogging in the pores and regulate oil production.
To smooth skin from within, seek a gentle chemical exfoliant that aids in cell turnover by using ingredients like Alpha Hydroxy Acid (AHA), Beta Hydroxy Acid (BHA) or Polyhydroxy Acid (PHA).
Alpha Hydroxy acid: they help in gentle exfoliation of the top layer of the skin, revealing a more youthful-looking skin underneath.
It falls into the set of ingredients called AHA's, or alpha hydroxy acids. Glycolic acid is probably the most common alpha hydroxy acid and has the reputation of being one of the safest forms of alpha hydroxy acid.
* EXFOLIATE--Use a loofah, scrub, or alpha hydroxy acid (AHA) cleanser.
JVS-Polymers Oy, Espoo, Finland has been granted a patent for a biodegradable, curable structurally star shaped polyester resin composition, characterized in that the resin composition is based on hydroxy acid units structural units derived from unsaturated difunctional monomers; structural units derived from polyol monomers or polyacid monomers, the composition being the polycondensation product of 60-99.8% mole of hydroxy acid monomers, 0.1-39% mole of unsaturated difunctional monomers, and 0.1-15% mole of polyol or polyacid monomers and being curable through double bonds.
Specifically, the FDA recommended that the label should appear on all products and read as follows: "Sunburn Alert: This product contains an alpha hydroxy acid (AHA) that may increase your skin's sensitivity to the sun and particularly the possibility of sunburn.
Chemicals which are projected to record double-digit growth through 2005 due to their novel or improved performance include coenzyme Q10, which combines antioxidant and exfoliant action; poly hydroxy acid, a hydroxy acid with a reduced risk of skin irritation; eflornithine hydrochloride, a hair growth retardant with new commercial applications; finasteride, a hair-growth stimulant; and a wide range of botanical and herbal extracts which have crossed over from the nutraceutical industry and bring with them an established reputation of safety and health benefits.
Such was the case with fruit acids such as alpha hydroxy acid, which propelled sales of skin-care products and their raw materials in the mid-1990s.