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a. a brownish colouring of the skin caused by the formation of the pigment melanin within the skin on exposure to the ultraviolet rays of the sun or a sunlamp
b. (as modifier): suntan oil
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



the darkening of human skin after exposure to ultraviolet radiation; such exposure causes an excess of the pigment melanin to be deposited in the surface layers.

A suntan develops gradually after repeated exposure to ultraviolet rays of low intensity. The deepest and longest-lasting tan results from prolonged exposure to sunlight; it often has an adverse effect on health (on the nervous, cardiovascular, and other systems). The extent and rapidity with which tanning takes place are not indicators of health.

Sensitivity to ultraviolet radiation varies from person to person, especially in children. Brunets with a swarthy skin tan more quickly than blonds or redheads with delicate, tender skin, which often burns on exposure to ultraviolet rays. Applying vegetable oils (nut, peach, and so forth) to skin speeds the tanning process and prevents the skin from drying out and, to some extent, from burning.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Health and natural simplicity rather than wealth, status and sophistication were the first meanings and motivations of the suntan.
Suntan lotions aimed at protecting children have also attracted strong consumer interest.
11 briefed the Commissioners on its proposed new mandatory rule requiring the use of child-resistant caps on cosmetic products such as baby oil and suntan lotion.
We all then hang our heads and go back to work, silently thinking "Why wasn't I born in Spain?" There's more to the sun than a suntan.
A SIZZLING barbecue summer will have us reaching for the suntan lotion this year, weather experts have predicted.
USING suntan cream could lead to Alzheimer's disease, scientists fear.
But she's a tad jealous of boyfriend Capital FM DJ GREG BURNS' suntan after their hol last week.
Hayden was once dubbed "Bradman with a suntan", but now he's just got the suntan, Fox Sports reported.
Once youeIUre back at your desk, your healthy golden glow may be fast disappearing along with your carefree smile.Those hours invested in slapping on the SPF and basking in the rays may have given you an enviable colour, but like your holiday, it doesneIUt last forever.Upping your tan maintenance routine will help your suntan stick around for longer and improve the appearance of your skin.HereeIUs how...
SUNTAN lotion is being given free to homeless people at risk of getting burned by living outdoors.
Mancini, sporting long locks and a suntan, looked like he had stepped straight off the Milan catwalk in fetching check trousers and a blazer concealed under a designer overcoat.
Why do some people get a suntan and other people get sunburn?