182 citations,
December 2007 in “BJCP. British journal of clinical pharmacology/British journal of clinical pharmacology” Hair follicles significantly increase the speed and amount of caffeine absorbed through the skin.
January 2006 in “中华医学杂志:英文版” Cultured skin cells can trigger hair growth and the amount of certain proteins they produce affects their ability to regenerate hair follicles.
2 citations,
January 2017 in “Skin appendage disorders” Women with and without hair loss have similar amounts of exogen hairs, so these hairs are not a key factor in hair loss conditions.
A reliable method was developed to ensure hair growth products have the right amount of active ingredients.
9 citations,
January 1989 in “Sen'i Gakkaishi” Wool and hair fibers absorb moisture similarly due to their keratin structure, with the amount of non-crystalline areas affecting the moisture uptake.
September 2016 in “Journal of dermatological science” The conclusion is that the variation in hair thinness in patients is mostly due to the amount of underdeveloped hairs, and treatments that thicken fine hairs might work for those with mild to severe conditions.
38 citations,
June 2018 in “Plant & cell physiology/Plant and cell physiology” Changing the amount of PLC5 in Arabidopsis affects root growth and drought resistance, with less PLC5 slowing root growth and more PLC5 improving drought tolerance but hindering root hair growth.
May 1995 in “Journal of Investigative Dermatology” Researchers developed a new way to measure gene activity in single hair follicles and found that a specific gene's activity changes with different amounts and times of treatment.
15 citations,
January 1971 in “Journal of animal science/Journal of animal science ... and ASAS reference compendium” Hair analysis can't determine ponies' calcium and phosphorus levels; use soil and feed tests instead.
May 1999 in “Dermatologic Surgery” The cell culture medium "RPMI" might slightly improve hair graft survival, but not by a significant amount.
July 2023 in “Research Square (Research Square)” Aloe Vera and injectable platelet-rich fibrin (i-PRF) together can speed up and improve hair growth when used in the right amounts.
34 citations,
August 1966 in “Experimental cell research” Keratin fibrils in hair form and stop growing at specific points in the follicle.
16 citations,
January 2015 in “Forensic science international” The hair of two ancient Chilean mummies is well-preserved and contains high levels of heavy metals.
14 citations,
June 2014 in “Journal of Pharmaceutical Sciences” Formulation P-08-016 better targets hair follicles for baldness treatment.
14 citations,
January 2009 in “Experimental Dermatology” Hair sheds gradually from the follicle, with readiness to shed indicated by less attachment material.
3 citations,
January 2019 in “Skin research and technology” All wiping methods are as effective as washing for removing cleaning agent from hair.
1 citations,
November 2022 in “Frontiers in medicine” The study found that giant pandas have more melanin in black hair follicles than white, with gene expression differences that could affect hair color and skin health.
1 citations,
March 2015 in “Journal of Visualized Experiments” Researchers developed a new, precise method to measure hair loss in mice using image analysis.
1 citations,
April 2013 in “PubMed” The document concludes that female pattern baldness involves hair thinning, is classified differently than in men, and is assessed using the Ludwig classification. It also explains the hair growth cycle stages.
September 2023 in “Biomedicines” Squalene may be a marker for certain types of alopecia.
PRP therapy is a promising hair loss treatment for people with alopecia.
November 2021 in “CRC Press eBooks” Hair color is determined by melanin and can be affected by genetic conditions like albinism.
66 citations,
September 2005 in “Photochemical & photobiological sciences” We don't fully understand how sunlight damages different types of hair.
56 citations,
January 1996 in “Journal of Forensic Sciences” Dye enters hair at the edges of cuticle cells and penetrates more from water than alcohol-based solutions.
39 citations,
December 2013 in “Phytotherapy Research” Safflower (Carthamus tinctorius) extract helps hair grow and could be used in hair products.
30 citations,
April 2009 in “Dermatologic Surgery” TrichoScan helps identify subtle hair thinning in women with androgenetic alopecia.
27 citations,
April 2011 in “International journal of legal medicine” In situ DNA labeling in hair can help predict forensic DNA analysis success.
26 citations,
February 2020 in “International Journal of Biological Macromolecules” Chitosan-coated dutasteride nanocapsules improve hair treatment, and physical stimulation boosts effectiveness.
21 citations,
March 2017 in “Skin research and technology” Removing external lipids from hair reduces moisture and increases strength, while removing internal lipids decreases water permeability.
20 citations,
August 2017 in “Drug testing and analysis” Drugs localize differently in hair strands based on their properties.