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Penetration of different wavelengths of light into human skin
Sources: 1. Shaath NA. Sunscreens, development, evaluation, and regulatory aspects. New York, NY: Marcel Dekker, Inc; 1997:211‒233. 2. Moyal D, Fourtanier A. Photoaging. New York, NY: Marcel Dekker, Inc; 2004:15–32. 3. Kullavanijaya P, Lim HW. J Am Acad Dermatol. 2005;52:937–958.
