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DHA may be used alone or combined with other tanning components such as erythrulose. DHA is considered the most effective sun-free tanning additive. [citation needed] Sunless tanning products contain DHA in concentrations ranging from 1% to 20%. Most drugstore products range from 3% to 5%, with professional products ranging from 5% to 20%.
Sunless tanning, also known as UV filled tanning, self tanning, spray tanning (when applied topically), or fake tanning, refers to the effect of a suntan without exposure to the Sun. Sunless tanning involves the use of oral agents (carotenids), or creams, lotions or sprays applied to the skin. [1]
It does not involve the underlying skin pigmentation nor does it require exposure to ultraviolet light to initiate the color change. However, the 'tan' produced by erythrulose/DHA only has an SPF of up to 3, [ 6 ] [ 7 ] and enhances the free radical injury from UV (compared to untreated skin) for the 24 hours after self-tanner is applied ...
Tanning may refer to: Tanning (leather), treating animal skins to produce leather; Sun tanning, using the sun to darken pale skin Indoor tanning, the use of artificial light in place of the sun; Sunless tanning, application of a stain or dye to the skin (active ingredient in tanning lotion products is dihydroxyacetone (DHA)).
Dehydroascorbic acid (DHA) is an oxidized form of ascorbic acid (vitamin C). It is actively imported into the endoplasmic reticulum of cells via glucose transporters. [ 1 ] It is trapped therein by reduction back to ascorbic acid by glutathione and other thiols . [ 2 ]
Indoor tanning lotions accelerate the tanning process, by promoting the production of melanin. [1] Increasing blood flow to the skin is a proposed mechanism, which may in turn stimulate production of melanin by melanocytes. [2] Historically, indoor tanning lotions have contained no sunscreen and offer no protection from the sun. However, many ...
The developer of the Houstonian Hotel was Tom Fatjo, a Houstonian who had also founded Browning-Ferris Industries (BFI). [2] The hotel opened in 1980. [3] George Alexander of the Houston Press said that the hotel was "built as a health club for business executives trying to shed pounds and rediscover their inner velociraptor".
A day spa in Milan, Italy A day spa in Wrocław, Poland. A day spa is a business that provides a variety of services for the purpose of improving health, beauty, and relaxation through personal care treatments such as massages and facials. The number of day spas in the US almost doubled in the two years from 2002 to 2004, to 8,734, according to ...