Dermatology Made Easy is based on the most popular topics from DermNet NZ's vast array of material. The book combines the essential focus of the ‘Made Easy’ book series with the authority and knowledge base of DermNet NZ's unparalleled resources.
Author: Vanessa Ngan, Staff Writer, 2005.
Sunbeds and solaria are artificial tanning devices used to tan or darken skin. A solarium is specifically an enclosed sunbed that has light tubes that emit radiation from above and below. Other tanning devices include portable sun lamps that are positioned in front of or angled over your skin.
In the same way that the sun emits ultraviolet (UV) radiation, artificial tanning devices such as sunbeds and sunlamps also emit UV radiation. The only difference is that the specific type and quantity of UV radiation produced from an artificial tanning device can be controlled. Most devices emit mainly UVA radiation, which is thought to be the least damaging of the UV radiation spectrum. Even though it is well known that excessive exposure to UVB radiation can lead to the development of skin cancers, some sunbed manufacturers are producing lamps that emit higher levels of UVB to mimic the sun’s UV radiation spectrum and speed the tanning process. Some sunbeds emit UV radiation five times the strength of the midday summer sun. The introduction of “fast tanning” or “10 minute” devices is highly unsafe as they emit dangerously high doses of UV radiation.
In the heydays of artificial tanning in the 1970-80’s, artificial tanning devices claimed to be an effective, quick and harmless alternative to sunlight to achieve the then fashionable bronzed healthy look. Nowadays, there is good evidence that tanning, whether by sunlight or sunbed, can lead to skin cancer and skin ageing. In an 8-year study of more than 100,000 Scandinavians, it has been found that people who visit tanning clinics on one or more occasions per month are 55% more likely to develop melanoma.
Exposure to both UVA and UVB radiation has been linked with an increased risk of skin cancers. The link between skin cancer and UV radiation exposure is quite simple – the greater the exposure to UV radiation, the greater the likelihood of developing skin cancer and the more quickly the skin will age. For further information on the effects that UVA and UVB have on skin, see page on sunburn.
The only time an artificial tanning device should be used is in the medical procedure of phototherapy. This process of exposing the body to UV radiation is useful in the treatment of a number of skin conditions, including psoriasis and dermatitis. These treatments should only be conducted under medical supervision.
Some people determined to exposure their skin to the natural or indoor sources of ultraviolet radiation are considered to be addicted to the habit. A study published in 2017 reported that when compared to non-users, tanning-dependent individuals were 6 times more likely to be dependent on alcohol, 5 times more likely to exhibit "exercise addiction" and 3 times as likely to suffer from Seasonal Affective Disorder.
In most countries around the world, the tanning clinic business is a largely unregulated industry. There is no mandatory training for people operating tanning clinics. In addition, there is no requirement for equipment to be checked or serviced regularly. This poses a huge risk to people who continue to use tanning clinics. The World Health Organisation (WHO) encourages governments to formulate and enforce effective laws governing the use of tanning devices. The use of commercial sunbeds is totally banned in Brazil and Australia.
In New Zealand, use of sunbeds and solaria by people under 18 years of age has been banned since January 2017. Compliance with the New Zealand Standard for operating procedures is otherwise voluntary.
There are many myths surrounding the use of tanning devices, some of which are dispelled below.
See the DermNet NZ bookstore.
© 2018 DermNet New Zealand Trust.
DermNet NZ does not provide an online consultation service. If you have any concerns with your skin or its treatment, see a dermatologist for advice.