A tanning bed or sunbed is a device emitting ultraviolet radiation (typically 95% UVA and 5% UVB, +/-3%) used to produce a cosmetic tan. Regular tanning beds use several fluorescent lamps that have phosphor blends designed to emit UV in a spectrum that is somewhat similar to the sun. Smaller, home tanning beds usually have 12 to 28 100 watt lamps while systems found in salons can run from 24 to 60 lamps, each consuming 100 to 200 watts.
There are also "high pressure" tanning beds that generate primarily UVA with some UVB by using highly specialized quartz lamps, reflector systems and filters. These are much more expensive, thus less commonly used. A tanning booth is quite similar to a tanning bed, but the individual stands while tanning and the typical power output of booths is higher.
Because of the adverse effects on human health of overexposure to UV radiation, including skin cancer, cataracts, suppression of the immune system, and premature skin aging, the World Health Organization does not recommend the use of UV tanning devices for cosmetic reasons. Using a sunbed without goggles may also lead to a condition known as arc eye.
Typical usage
Tanning beds are used for somewhat different reasons in North America than in Europe. In North America, tanning is more seasonal, where most users begin in January and stop or slow down by June. It is most often used as a way to jump start the tanning process, so that once the summer begins, they can go to the beach or enjoy other outdoor activities and already have a significant base tan built up. This is also why tanning lotions and bronzers are more commonly used in North America.
Europeans may enjoy tanning seasonally, but less so than North Americans. This is due to many areas in Europe having significantly fewer days of sunshine than North America, so Europeans are more likely to use a tanning bed all year long, for both the cosmetic and mood altering benefits. European tanning beds generally use a different type of lamp as well, with UVB ratings in the 1% to 3% range (using US measuring methods) whereas most tanning beds sold in the US use 4.2% to 6.5% UVB ratings, and aftermarket lamps with up to 8.5% or higher being popular. Of course, these lamps have less UVA and will produce a sunburn quicker, but many Americans seem to like them because a short session produces a "reddening", or instant gratification. These lamps actually produce a slower deep tan (but a faster base tan) that fades faster, but are simply marketed as "hotter", although technically they have about the same amount of UV but with different ratios of UVA and UVB.
While the primary reason for both Americans and Europeans to use a tanning bed is cosmetic, there are many other reasons why they are used. It is common for people to tan simply because it makes them feel good. Also, most tanning beds generate a large amount of heat, including infrared, which has deep penetrating action that can relieve minor muscle aches.
The tan produced by a tanning bed is just as deep as a tan produced in the sun. This is because tanning beds have similar levels of UV than the sun on a typical summer day. Exposure times are shorter than the average session spent in the sun to achieve the same amount of tan due to the proximity to the UV source. It is strongly recommended that a person does not tan indoor and outdoors on the same day, due to the likely chance that they will get overexposed. Because overexposure actually destroys melanin, getting a sunburn will result in LESS tanning. The popular wisdom that one "needs to burn to tan" or that a sunburn will turn into a tan is simply wrong, and increases the chances of skin cancer later in life. This makes tanning indoors a better option for people with fair skin types, as they can visit a local salon several times to develop a tan slowly without burning instead of trying to attain the same results at the beach or backyard in one day. It is important to note that if an individual has a skin type that cannot develop a tan outdoors, they will not be able to indoors either.
History
Although tanning beds were initially brought to America by Friedrich Wolff in 1978, he soon patented his particular blend of phosphors (since expired) and began licensing the technology to other companies. Wolff Systems has since devoted all their resources into lamp technology and development. Some of the early adopters of the Wolff technology include ETS, Inc., SCA, Sun Industries, Inc., Montego Bay, Sunal. Later, Friedrich sold Wolff Systems to his brother Jorg Wolff, who was the founder of Cosmedico, Ltd., another pioneer in the tanning industry.
Initially, tanning beds were virtually unregulated in the US, but in 1988 (and later updated in 1999) the primary source of regulation at the federal level was 21 CFR 1040.20. This law was designed primarily to ensure that all tanning beds sold or used in salons adhered to a general set of safety rules, with the primary focus on tanning bed and lamp manufacturers in regards to maximum exposure times and product equivalence. It is left up to each individual state to determine the regulations for salons themselves, and as such, many states are still not regulated beyond these basic federal rules.
Several companies continue to license the Wolff name and use their lamps because of the name recognition, although this has steadily diminished over the years as other lamp builders have created lamps that are arguably as good as or better. Licensing is not required to use Wolff lamps, but it is required to call a tanning bed a "Wolff System" and use the Wolff System logo, a yellow circle with horizonal bars and the name "Wolff Systems" in black. Tanning beds that use Wolff products but do not pay royalties can use only the term "Powered by Wolff," which is unique in the industry.
Most modern tanning beds have not changed much from the original systems. The lamp technology and electronics have evolved over the years, but the basic "low pressure" tanning bed has not evolved. The original electronics used in the first tanning beds, both "European choke" and magnetic, are still in use today although there are now many other choices including electronic and high frequency. The lamps are still fluorescent type, using special phosphors that create a spectrum in the UVA and UVB range although there has been a great deal of advancement over the years to make the light spectrum they emit more "sun-like".
The first original tanning lamps were discovered by accident in 1903 by a German company called Heraeus who were developing lighting systems for the home and for industrial usage. These lamps were of the high-pressure metal halide variety. They discovered that the light that was developed for visible light purposes also emitted ultra-violet light. In the 1920s and 1930's they (Heraeus) first started to market and sell single lamp, self standing tanning/wellness devices. The first high-pressure tanning beds incorporating more than a single high-pressure lamp were manufactured in the mid to late seventies by companies such as Ultrabronz and JK Ergoline and in the 1980s the first high-pressure units were exported to the United States.
These units require special filter glass to remove the UVC and the majority of the UVB that is emitted and are difficult to manufacture because the alignment of the lamps is more critical than in traditional low-pressure tanning beds. They are generally large units, with a padded area to lie on or an acrylic and 6 to 36 lamps in a canopy or canopy and bench configuration, the tanning effect is much deeper and requires only a maintenance exposure of about 2-3 times per month compared to every 48 hours for regular tanning beds. They are much more expensive to operate, thus more expensive for the user. Retail prices in the $20,000 to $35,000 range are common with individual sessions costing $20 to $45, depending on the market.
Current trends
A growing trend is the home tanning bed. Many people are now opting to own their own tanning system instead of going to the salon. The primary reasons are sanitation concerns and convenience. The average home system has 16 to 24 lamps, and costs $2000 to $3000, making its price competitive (over a number of years) for tanners who frequent salons regularly. This has led to an explosion of retailers that feature smaller, home style tanning beds both on the internet and in traditional retail stores.
Another trend is spray on tanning (a form of sunless tanning), using either special booths or a hand held setup similar to an airbrush. Many people who try spray on tanning often still go to the tanning salon, and use the spray on as a way to jump start the appearance of a tan, while others use it as a way to look tan while avoiding UV exposure of any kind. This is also demonstrated by the large number of indoor tanning lotions that have "bronzers" included, which is similar to the chemicals used for spray on tans, DHA.
Design
Main article: Tanning lampsIn many ways, tanning beds are simply light fixtures that you lie under to tan. Most tanning beds use choke ballasts, a technology that has been around for about 100 years, consisting of a simple inductor which limits amount of current passing through, and requires a lamp starter to preheat the ends of the lamp briefly at start. Newer ballast systems include magnetic
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