If you are researching this specific era of European publishing,

: By 1962, West Germany was experiencing an economic miracle ( Wirtschaftswunder ). Print media flourished, and publications like Sonnenfreunde documented the growing availability of specialized FKK holiday resorts, beaches, and family sports clubs. Dissecting Issue 156 (1962)

A departure from the glossy norm, this section features dermatologists, photobiologists, and cosmetic chemists in laboratory settings. They are shown calibrating UV lamps, testing SPF formulations, and analyzing melanin response. The "work" here is clinical, precise, and urgent. An infographic titled “The 9-to-5 of a Sunscreen Chemist” became so popular that it was later reprinted in academic journals. For many readers, this was the first time they understood that a glowing tan is the result of thousands of hours of industrial research.