Sunless tanning is the only healthy way to tan.

"As far as we know, there are no ill effects with sunless tanning," he said.

"There is a controversy among dermatologists about whether to promote sunless tanning," Chen says.

It is popular in film, theater, and sunless tanning; although systems designed for personal cosmetic use in the home are also available.

Bronzers are a temporary sunless tanning or bronzing option.

They tested to see if administering this endogenous hormone to the body directly could be an effective means of sunless tanning.

Because of the QT experience, many people today still associate sunless tanning with fake-looking orange tans.

"The positive message here is sunless tanning is safe; tanning beds and going to the beach is not."

It may be used in a process for permanent waving of hair and in a process for sunless tanning of skin.

Another trend is spray on tanning (a form of sunless tanning), using either special booths or a hand held setup similar to an airbrush.

However, Chen found, the more they used the sunless tanning, the more likely they were to reduce the use of sunbathing or tanning beds.

Sunless tanning delivers a faux glow by coating your skin with the chemical dihydroxyacetone (DHA).

Airbrushes are used to apply special tanning solutions as a form of sunless tanning that simulates the appearance of a natural sun tan.

The most effective sunless tanning involves the use of lotions and sprays that contain dihydroxyacetone (DHA) as the active ingredient.

Lawsone strongly absorbs UV light, and aqueous extracts can be effective sunless tanning and sunscreens.

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Five days after my initial immersion, I did attempt a revisionist foray into a Coppertone product - not Q.T., which I couldn't find in the stores, but something called Sunless Tanning Lotion.

Sunless tanning (also known as UV-free tanning, self tanning, spray tanning (when applied topically), or fake tanning) refers to the application of chemicals to the skin to produce an effect similar in appearance to a suntan.

The popularity of sunless tanning has risen since the 1960s after links were made by health authorities between exposure to the sun and other sun tanning methods, such as sunbeds or tanning beds, and the incidence of skin cancer.

DHA-based sunless tanning has been recommended by the Skin Cancer Foundation, American Academy of Dermatology Association, Canadian Dermatology Association and the American Medical Association as a safer alternative to sun-bathing.

There are hundreds of these products on the market but ConsumerSearch.com lists Clarins Self Tanning Gel, Jergens Natural Glow Daily Moisturizer, and Neutrogena MicroMist Sunless Tanning Spray as the top three.

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The appearance of veins are further enhanced immediately before appearing on stage by darkening the skin through sunless tanning, applying vegetable oil to the skin to increase shine and some competitors will eat sugar-rich foods to increase the visibility of their veins.

A safe and effective method of sunless tanning is consumption of certain carotenoids - antioxidants found in some fruits and vegetables such as carrots and tomatoes - which can result in changes to skin color when ingested chronically and/or in high amounts.

There are more than 35 products on the market, priced from as little as $5 for 3.75 ounces of Coppertone Sunless Tanning Extra Moisturizing Lotion to $20 for 4.2 ounces of Lancome Personalized Self-Tanning Lotion.