Guides for HB541 from Philips

Part of the instruction manual for the Philips HB541 in English:
UV-A, UV-B and UV-C Ultraviolet (UV) is subdivided into UV-A (longer wave lengths), UV-B and UV-C (shorter wave lengths). UV-C seldom reaches the earth as it is filtered out by the atmosphere. UV-A and UV-B cause the tanning effect of the skin. In fact there are two processes which produce tanning, and they are simultaneously effective: • "Indirect tanning". Primarily UV-B stimulates the production of a substance called "melanin", which is necessary for tanning. The effect does not show until a couple of days after the sunbath....
Manufacturer: Philips
Model: HB541
Size of the instruction manual: 1.03 MB
Category: Miscellaneous

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