January 2005 in “Digital Commons - University of South Florida (University of South Florida)” Concerns about attractiveness and skin aging strongly influence tanning behaviors.
The optimal concentration for caffeine release in gel form is 0.2% caffeine and 2.3% chitosan.
20 citations
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December 2003 in “Journal of Cosmetic and Laser Therapy” An 800nm diode laser safely and effectively reduces hair for about 8 months, with most patients satisfied and few side effects.
9 citations
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June 1959 in “Archives of dermatology” Hair can darken after inflammation and then return to its original color.
6 citations
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October 2007 in “Medical Hypotheses” Male pattern baldness might have evolved to help protect against prostate cancer by increasing UV radiation on the scalp.