title: [Light protection and increase of UV tolerance].
abstract: Topical sun-ray filter creams protect the skin from sunburn and from long-term damages caused by UV-radiation. The choice of the sun protecting factor depends on the radiation dose as well as on the individual sensitivity to UV-radiation. For the prevention of photodermatoses, the industry offers broad spectrum absorbents. For internal prophylaxis, oral ingestion of a new preparation containing 25 mg beta-carotene and 35 mg canthaxanthin per dragee, has proved to restore the tolerance of sunlight with polymorphic light eruption, light urticaria, protoporphyria, and other photodermatoses to a considerable degree. In case of failure, photo- or PUVA-prophylaxis using tolerated UV-doses is recommended. All the treatments have to be repeated every year.
mesh_terms: D006801:Humans; D011701:PUVA Therapy; D010787:Photosensitivity Disorders / Q000517:prevention & control*; D011836:Radiation Tolerance; D013471:Sunburn / Q000517:prevention & control*; D013473:Sunscreening Agents / Q000627:therapeutic use*; D014466:Ultraviolet Rays / Q000009:adverse effects*
chemical_list: D013473:Sunscreening Agents
vernacular_title: Lichtschutz und Steigerung der UV-Toleranz.