March 2007 in “The FASEB Journal” Henna mixed with PPD can cause skin reactions, scarring, and a specific type of baldness, and needs more research to understand these effects.
2 citations
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January 2019 in “Applied clinical research, clinical trials and regulatory affairs” Different countries have regulations to ensure the safety of hair care products, with some recalling hair straighteners due to high formaldehyde.
65 citations
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October 2018 in “Frontiers in cellular and infection microbiology” Certain bacteria and fungi are linked to healthy scalps and dandruff, suggesting that the scalp's microbial balance affects its health.
36 citations
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January 2018 in “Burns & Trauma” NSAIDs may not affect soft tissue healing but should be used carefully for bone fractures and more research is needed to understand sex differences in response.
29 citations
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December 2012 in “Fibrogenesis & Tissue Repair” Adult stem cells are important for tissue repair and have therapeutic potential, but more research is needed to fully use them.