Indoor tanning lotion
Encyclopedia
Unlike sunscreen
Sunscreen
Sunblock is a lotion, spray, gel or other topical product that absorbs or reflects some of the sun's ultraviolet radiation on the skin exposed to sunlight and thus helps protect against sunburn...

  but like tanning oil, indoor tanning lotions accelerate the tanning process
Sun tanning
Sun tanning or simply tanning is the process whereby skin color is darkened or tanned. The process is most often a result of exposure to ultraviolet radiation from the sun or from artificial sources, such as a tanning bed, but can also be a result of windburn or reflected light...

, by promoting the production of melanin
Melanin
Melanin is a pigment that is ubiquitous in nature, being found in most organisms . In animals melanin pigments are derivatives of the amino acid tyrosine. The most common form of biological melanin is eumelanin, a brown-black polymer of dihydroxyindole carboxylic acids, and their reduced forms...

  or by increasing blood flow to the skin, thereby increasing the amount of melanin that is brought to the top layers of the skin. Indoor tanning lotions contain no sunscreen and offer no protection from the sun. Unlike sunless tanning lotions, they are designed for use with an ultraviolet source such as a tanning bed or booth to achieve results.

Ingredients

Some of the active ingredients found in common tanning lotions include melanin and L-Tyrosine. Other commonly found ingredients include tea oil
Tea oil
Tea seed oil is an edible, pale amber-green fixed oil with a sweet, herbal aroma. It is cold-pressed mainly from the seeds of Camellia oleifera but also from Camellia sinensis or Camellia japonica....

, copper
Copper
Copper is a chemical element with the symbol Cu and atomic number 29. It is a ductile metal with very high thermal and electrical conductivity. Pure copper is soft and malleable; an exposed surface has a reddish-orange tarnish...

 (in many different chemical compounds), green tea
Green tea
Green tea is made solely from the leaves of Camellia sinensis that have undergone minimal oxidation during processing. Green tea originates from China and has become associated with many cultures throughout Asia. It has recently become more widespread in the West, where black tea is traditionally...

 extract and many other natural oils. Indoor tanning lotions are usually designed to only use ingredients that will not cause damage or build up on acrylic surfaces. This is because all tanning beds use 100% acrylic in their protective shields. This is one reason people should not use outdoor tanning lotion in a tanning bed, as some common ingredients such as mineral oil
Mineral oil
A mineral oil is any of various colorless, odorless, light mixtures of alkanes in the C15 to C40 range from a non-vegetable source, particularly a distillate of petroleum....

 (common ingredient in cosmetics, including some baby oil brands) will damage the surface of the acrylics.

Tingle is a standard description for indoor tanning lotions that contain ingredients that increase blood flow at the skin level, or cause a "tingling" sensation.

Bronzers

Some lotions have a bronzing affect to them. There are two different types of bronzers; cosmetic and natural. Cosmetic bronzers are usually DHA (dihydroxyacetone) based. These bronzers work with the skin to provide a darker cosmetic color. They take approximately 4-6 hours to develop full color. It's recommended that you have a base tan before using a bronzer for a more natural looking color. Natural bronzers use natural ingredients, such as, caramel, riboflavin, etc. These ingredients provide a slight instant boost of color, but will wash off in the shower. Higher quality natural bronzer lotions will have certain organic ingredients/natural or exotic extracts that help aid in the process of tanning (melanin production/oxidization).

Moisturizing

One of the primary purposes for using indoor tanning lotions is to moisturize the skin. This is because tanning (indoors or out) can dehydrate the skin so additional moisturization is needed to compensate and leave the skin looking smooth and healthy. One of the most popular moisturizing elements in tanning lotions is hempseed oil, although other oils are also common. The primary moisturizing ingredients in tanning lotions are essentially the same as in regular hand lotions, although they tend to have less alcohol
Alcohol
In chemistry, an alcohol is an organic compound in which the hydroxy functional group is bound to a carbon atom. In particular, this carbon center should be saturated, having single bonds to three other atoms....

 in them.

Outdoor use

Most indoor tanning lotions do not offer protection from the sun (have no SPF) and are not intended for outdoor use.
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