December 2006 in “Belarusian State Pedagogical University repository (Belarusian State Pedagogical University)” Synthetic hairs have side effects and need careful use.
Synthetic hairs can help in restoring lost hair.
10 citations
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January 2010 in “International Journal of Trichology” Synthetic hair fibers for hair restoration were controversial in 2009 due to health risks and lack of support from the International Society of Hair Restoration.
4 citations
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February 2020 in “Journal of Cosmetic Dermatology” Synthetic hair implants can cause severe scalp problems and removing them improves conditions; natural hair transplants are safer and more effective.
8 citations
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June 1979 in “JAMA” Synthetic hair implants can cause severe infections and are risky.