TLDR  Anesthesia makes hair restoration surgery painless.   
     
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           4 citations
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  May 2019   in “Journal of Cosmetic Dermatology”    Using a smaller syringe causes less pain when giving an injection.  
     
           10 citations
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  May 2019   in “Archives of Plastic Surgery”    Follicular unit extraction (FUE) causes less postoperative pain than follicular unit transplantation (FUT), but pain from both methods decreases significantly within two days.