The research at NIVEA was led by Dr. Ludger Kolbe, Chief Scientist for Photobiology at Beiersdorf and his team and in close collaboration with Prof. Thorsten Marquardt from the University Hospital in Münster, Germany (UKM). Thanks to their expertise they were able to develop the unique cosmetic sunscreen developed specifically for the needs of Charlottes skin. Each of our products, including Charlotte's cream, must undergo comprehensive testing to secure the quality and safety. For cosmetic sunscreen products, we also test their effectiveness in protecting against UVA and UVB rays. In the case of Charlotte's cream, we have additionally developed a testing method that allowed us to test all prototype formulations for an optimized protection against blue light, as it is the blue light components of the sun that cause severe pain to Charlotte's skin.