October 2021   in “The Egyptian Journal of Hospital Medicine ”    Combination therapies work better than single treatments for atrophic acne scars.  
               April 2019   in “Journal of Investigative Dermatology”    Dihydrotestosterone (DHT) increases oil production in skin cells by activating mTOR, and mTOR inhibitors can reduce this effect.  
     
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  August 2014   in “Skin research and technology”    Sleep, testosterone levels, and a specific enzyme activity affect skin oil production in women.  
     
           September 2025   in “Cosmoderma”    Pandemic stress worsens hair loss and skin issues, suggesting combined mental and skin care treatments.  
     
           January 2024   in “Biological trace element research”    Isotretinoin affects trace element levels and requires monitoring of liver and kidney functions.