January 2009 in “Actas dermo-sifiliográficas/Actas dermo-sifiliográficas” Lasers and light treatments are now the most common ways to remove hair.
July 2002 in “Dermatologic Surgery” Some people's hair turned white or gray after using intense pulsed light for hair removal, and for some, it was permanent.
2 citations
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November 1996 in “PubMed” Most people have similar hair protein patterns, but a rare variant was found in two women.
6 citations
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December 2019 in “International Journal of Cosmetic Science” White hair has weaker tryptophan fluorescence than other unpigmented fibers, possibly due to UV exposure or unknown substances.
August 2025 in “ChemPhotoChem” A new method using solid-state circular dichroism anisotropy can distinguish similar chiral compounds better than traditional techniques.
Hair coloring and bleaching can permanently break down hair protein and temporarily change its properties.
53 citations
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September 1999 in “Journal of Synchrotron Radiation” Keratinous tissues have multiple structural layers, including ordered keratin and lipid granules.
72 citations
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November 2012 in “PloS one” The protein folliculin, involved in a rare disease, works with another protein to control how cells stick together and their organization, and changes in this interaction can lead to disease symptoms.
45 citations
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June 2004 in “Lasers in Medical Science” Intense pulsed light (IPL) is an efficient and safe method for hair removal, reducing hair by about 80%.
36 citations
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April 2016 in “Experimental Dermatology” Photobiomodulation may help with hair growth and wound healing, but research is inconsistent and needs better quality studies.
4 citations
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April 1999 in “Dermatologic Clinics” Long-pulsed ruby lasers effectively reduce hair for up to 2 years with minimal pain.
2 citations
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January 2002 Melanin and melanocytes contribute to the brown pigmentation in stasis dermatitis.
December 2025 in “Journal of Pharma Insights and Research.” The shampoo naturally colors and conditions hair safely without toxic chemicals.
January 2025 in “E3S Web of Conferences” Lasers are effective for hair removal, skin rejuvenation, and acne treatment in dermatology.
September 2024 in “Journal of the Pakistan Medical Association” A 589 nm laser increases IL-2 and IFN-y gene expression in human T-cells.
October 2022 in “Journal of Pharmaceutical Negative Results” Photobiomodulation therapy shows promise in treating various health conditions by using specific light wavelengths.
30 citations
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January 1963 in “PubMed”
March 2012 in “Korean Journal of Microscopy” Quantum dot nanoparticles can penetrate skin and reach sebocytes through hair follicles.
6 citations
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April 2021 in “Scientific Reports” Phytochrome A is crucial for normal metabolism and development in tomato seedlings under far-red light.
October 2019 in “European Journal of Dermatology” The boy's hair and skin color differences are due to a pigmentation disorder.
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July 2005 in “Journal of Chromatography B” A new method accurately measures hair lipids, revealing individual differences.
86 citations
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August 2000 in “Pigment cell research” Melanocyte activity in hair follicles is linked to the hair growth cycle, being active in growth phases and inactive in rest phases.
Polarized microscopy helps identify hair irregularities in genetic disorders.
August 2023 in “International Journal of Molecular Sciences” The human scalp hair bulb contains different types of melanocytes with varying abilities to produce melanin.
81 citations
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October 2014 in “The journal of investigative dermatology/Journal of investigative dermatology” Certain genes control the color of human hair by affecting pigment production.
November 2022 in “The journal of investigative dermatology/Journal of investigative dermatology” The study found markers indicating that cells responsible for hair color are differentiating in specific areas of the hair follicle.
66 citations
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February 1985 in “Archives of dermatological research” Hair dyes penetrate the scalp very minimally, less than 1%.
January 2010 in “Elsevier eBooks” Hair color is important in many fields and is measured for various purposes.
120 citations
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February 2009 in “Apoptosis” Understanding how cells die in the skin is important for treating skin diseases and preventing hair loss.
70 citations
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April 2017 in “Lasers in surgery and medicine” Blue light promotes hair growth by interacting with specific receptors in hair follicles.