February 2025 in “International Journal of Cosmetic Science” A new amino acid derivative, ATS, improves hair texture and moisture, making it easier to straighten curly hair.
The sympathetic nervous system is linked to scalp hair loss.
January 2023 in “Toxicological Research” 1 citations
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March 2004 in “Patty's Toxicology” These chemicals can be toxic, causing health issues like cancer, liver damage, and irritation.
Diphenyl cresyl phosphate has low toxicity but can harm the liver, kidneys, adrenal glands, and testicles at high doses.
11 citations
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October 2002 in “Pharmacology Biochemistry and Behavior” Formalin-induced pain increases testosterone breakdown in the rat brain and spinal cord.
5 citations
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January 2000 in “Inhalation Toxicology” Aqueous dispersion resin is safe to inhale at levels below 30 mg/m³.
1 citations
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March 2004 in “Patty's Toxicology” These chemicals can be toxic and cause health issues like irritation, liver damage, and cancer.
2 citations
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June 1985 in “PubMed” Ethylenthiourea is toxic to the liver and nervous system, especially with alcohol.
79 citations
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January 1975 in “Food and Cosmetics Toxicology” The hair dye formulations tested did not cause long-term toxicity or cancer in mice.
January 1988 in “Toxicological Sciences” 4PeCDF is highly toxic to male rats, causing weight loss, organ damage, and death.
January 1994 in “Toxicological Sciences” Lower dosages of 2-(difluoromethyl)-dl-ornithine might reduce side effects, supporting further research.
December 2025 in “Zenodo (CERN European Organization for Nuclear Research)” Ficus platyphylla leaf extract is likely safe in high doses, with minor temporary side effects.
13 citations
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December 1977 in “Journal of Toxicology and Environmental Health” High levels of phenyl glycidyl ether vapor caused hair loss in rats.
August 2013 in “Toxicology letters” 12 citations
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August 2014 in “Elsevier eBooks” Thallium exposure can cause serious health issues, including nerve damage and hair loss.
17 citations
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January 2021 in “Agrobiological Records” Allethrin caused harmful effects and organ damage in rats, worsening with higher doses and longer exposure.
1 citations
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June 2021 in “Preprints.org” Hair relaxers and straighteners can be toxic to skin cells.
May 2026 in “Sudovo-medična ekspertiza”
February 2023 in “Ankara Üniversitesi Veteriner Fakültesi dergisi” Two calves died from ethylene glycol poisoning, a condition more common in pets.
54 citations
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March 1991 in “Proceedings of the National Academy of Sciences” This model can replace animal testing for quick, cost-effective skin toxicity tests.
1 citations
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October 2022 in “The American Journal of Gastroenterology” Chronic arsenic exposure can cause liver damage and other health issues.
9 citations
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March 1968 in “The BMJ” A woman's severe skin reaction was caused by an allergy to a skin treatment.
November 2025 in “Contact Dermatitis” Hair straightening products with glyoxylic acid can cause skin irritation and kidney damage.
12 citations
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June 2023 in “Journal of trace elements in medicine and biology” Eating too much selenium can cause bad breath, hair loss, and nail changes, with harmful effects starting at low daily doses.
December 2025 in “Zenodo (CERN European Organization for Nuclear Research)” Ficus platyphylla leaf extract is likely safe in high doses for rats.
March 2013 in “Molecular & Cellular Toxicology/Molecular & cellular toxicology” m-Aminophenol in hair dye can cause skin cell toxicity and stress responses.
20 citations
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January 2010 in “Biological Trace Element Research”
June 2016 in “The Egyptian Journal of Forensic Sciences and Applied Toxicology” Long-term exposure to benzene increases skin diseases, blood disorders, and liver problems.
7 citations
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February 2021 in “Legal Medicine” Hair analysis showed very high metformin levels in two fatal overdose cases, suggesting it's useful in forensics but sweat may affect results.