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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)).
There is also a professional spray-on tanning option or "tanning booth" that is offered by spas, salons, and tanning businesses. [53] Spray tanning does not involve a color being sprayed on the body, instead it uses a colorless chemical that reacts with proteins in the top layer of the skin, resulting in a brown color. [citation needed]
Tanning, or hide tanning, is the process of treating skins and hides of animals to produce leather. A tannery is the place where the skins are processed. Historically, vegetable based tanning used tannin, an acidic chemical compound derived from the bark of certain trees, in the production of leather. An alternative method, developed in the ...
The Westin Oaks Houston. Two hotels are located directly in the Galleria complex. The 400-room Houston Oaks Hotel opened in September 1971, soon after the opening of the first wing of the Galleria. The 500-room Galleria Plaza Hotel opened on November 18, 1977, soon after the opening the second wing.
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".