Germany's highest court upheld a law that bans children below 18 from visiting tanning studios due to health concerns.
The German government adopted the law in 2009 after a study showing that people under the age of 30 had 75 percent more chance of contracting skin cancer from regular sunbed use than older people.
The Constitutional Court dismissed a complaint brought by tanning studio operators, judging that the ban was justified on public health grounds.
It said that child-protection legislation aimed to prevent minors from harming themselves.
Germany is one of the top markets for artificial tanning, with 3,500 studios and 50,000 tanning cabins, if those in swimming pools, fitness centres and hotels are included.
The sector employs some 32,000 people and the main manufacturers of tanning machines are headquartered in Germany.