November 2025 in “Wiley Interdisciplinary Reviews Forensic Science” Hair testing is a useful method for detecting past substance use and recent advancements improve its accuracy and reliability.
1 citations
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July 2016 in “Cosmetics” Black henna tattoos can cause severe allergies to hair and textile dyes, and there's a need for greater public awareness and regulation.
15 citations
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January 2008 in “Annales de Toxicologie Analytique” Hair test results can be misleading due to contamination, so they shouldn't be used alone to determine drug use.
10 citations
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October 2010 in “International Journal of Andrology” Finasteride doesn't affect oral testosterone undecanoate, and high DHT levels may cause acne, prostate issues, and hair loss.
3 citations
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November 2021 in “Stress” Girls had higher stress hormone levels during school due to social and emotional issues, while boys had higher overall hormone levels with slight changes when school started.
3 citations
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June 2010 in “Pharmacognosy journal” The polyherbal hair oil effectively reduces dandruff and promotes hair growth.
January 2026 in “Journal of Ayurveda and Integrated Medical Sciences” Bhringaraj extract tablets significantly reduce hair fall and are well-tolerated.
Hair test results can be misleading due to external contamination, so they shouldn't be used alone to assess long-term drug use.
May 2026 in “Organoid Research” Hydrogel-based hair follicle organoids could help treat hair loss and improve drug testing.
44 citations
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November 2018 in “Journal of applied ecology” Hair analysis for stress and reproductive hormones in wildlife needs more research for accuracy across species.
33 citations
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January 2017 in “Conservation physiology” Measuring reproductive hormones in brown bear hair could help identify their sex and reproductive state, but better collection methods or lab techniques are needed.
22 citations
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April 2015 in “Current problems in dermatology” Human hair follicles have a unique metabolism that changes between growth stages and may contribute to baldness.
May 2017 in “Journal of The American Academy of Dermatology” The new baby shampoo and wash with stearic acid is safe and potentially effective for nourishing babies' skin.
2 citations
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December 2015 in “International Journal of Dermatology” Washing test helps identify hair loss type, low iron levels significant.
21 citations
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January 2017 in “MethodsX” Methanol is better than isopropanol for washing grizzly bear hair to measure cortisol.
21 citations
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January 2020 in “Conservation Physiology” Hair follicles increase hair cortisol levels, so consistent hair collection methods are important.
1 citations
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May 2017 in “InTech eBooks” Telogen Effluvium is a common hair loss condition that can be short-term or long-lasting and is often caused by stress, illness, or nutritional issues.
12 citations
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January 2020 in “Indian Dermatology Online Journal” Female pattern hair loss has multiple causes and treatments, with new therapies showing promise.
2 citations
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July 2023 in “Cosmetics” Surfactants in shampoos and conditioners remove some but not all lipids from hair, and more research is needed to understand their full impact.
May 2023 in “Journal of Clinical Medicine” New understanding and treatments for hair loss are improving, but more research is needed.
6 citations
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February 1974 in “The BMJ” The document concludes that scalp disorders can be treated with hair washing, specific shampoos, medications, and sometimes surgery or hair transplants, but hereditary baldness is untreatable.
April 2024 in “Cosmetics” Different oils affect hair flexibility and strength, with their impact varying on whether hair is virgin or bleached.
The case shows the difficulty in diagnosing certain conditions when standard tests are negative.
July 2023 in “Drug testing and analysis (Print)” Homemade hair treatments can significantly lower drug levels in hair, possibly causing false-negative drug tests.
July 2018 in “International journal of research - granthaalayah” Croton tiglium application significantly improved hair regrowth in alopecia areata patients.
July 2018 in “Elsevier eBooks” Telogen Effluvium is a common, usually reversible hair loss condition, often improved by removing the trigger and possibly treated with various products, though their effectiveness is uncertain.
March 2019 in “European archives of medical research” Platelet-rich plasma injections are a cheap and effective way to reduce hair loss and improve hair quality in people with mild to moderate androgenetic alopecia.
1 citations
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August 2021 in “International journal of scientific research in science and technology” The polyherbal hair oil promotes hair growth, reduces hair loss, and is safe to use.
Non-invasive methods can effectively diagnose and manage alopecia areata.
November 2023 in “International Journal of Cosmetic Science” Wheat polar lipid complex reduces hair loss and improves hair growth in women.