11 citations,
December 2014 in “The American journal of pathology” A gene deletion in mice causes weak protein, immune issues, hair loss, airway problems, and wasting disease.
12 citations,
January 2020 in “Analyst” Researchers found markers that can tell if hair has been bleached, which could improve hair test accuracy.
September 2022 in “Cosmetics” 1 citations,
March 2023 in “Applied sciences” Lavender, lemongrass, rosemary, and chamomile essential oils may help protect cells important for hair growth from damage and could promote hair growth.
3 citations,
January 2018 in “International Journal of Cosmetic Science” Hair stiffness increased by 13.2% after caffeine treatment, validating the Stiffness-Angle Law as an effective measurement method.
5 citations,
August 2019 in “iScience” Deleting the Trf1 protein in mice is safe and may help prevent cancer without major side effects.
31 citations,
April 2016 in “Nature communications” Certain signals are important for reducing specific chemical markers on hair follicle stem cells during rest periods, which is necessary for healthy hair growth.
20 citations,
January 2003 in “Journal of oleo science” Chemical treatments and daily stresses damage hair, especially the cuticle layer.
6 citations,
June 2011 in “Pharmacognosy Journal” Many products for hair re-growth exist, but a perfect treatment without side effects has not yet been found.
4 citations,
March 2015 in “Skin Research and Technology” Trichotillometry is a reliable method to measure hair strength and assess hair loss treatments.
3 citations,
September 2020 in “Journal of cosmetic dermatology” Coconut oil makes hair stronger and more flexible than mineral oil.
May 2023 in “Animal Reproduction Update” High levels of cortisol in hair show long-term stress which can lower fertility in animals.
January 2023 in “Research Square (Research Square)” Hair glycation could be a reliable non-invasive indicator of blood glucose control, but its use is limited by factors like sample collection and hair treatments.
51 citations,
January 2007 in “Animal Genetics” The gene for slick hair in Senepol cattle is located on chromosome 20 and may involve the SRD5A2 gene.
12 citations,
December 2017 in “Journal of biomaterials science. Polymer ed.” Human hair protein extracts can protect skin cells from oxidative stress.
11 citations,
February 2018 in “Amino acids” Copper and iron cause keratin damage in hair by converting methionine to homocysteine.
14 citations,
January 2015 in “ABCD” The surgery effectively promoted and maintained weight loss in obese women during the first year.
1 citations,
July 2020 in “bioRxiv (Cold Spring Harbor Laboratory)” Removing centrosomes from skin cells leads to thinner skin and stops hair growth, but does not greatly affect skin cell differentiation.
2 citations,
May 2022 in “Diagnostics” Vitamin D levels in hair don't match those in blood, so hair isn't a reliable indicator of Vitamin D status.
April 2024 in “Applied biological chemistry” Piperine from black pepper can make hair less oily by blocking fat cell development in hair roots.
27 citations,
July 2018 in “Experimental dermatology” Autophagy is crucial for normal sebaceous gland function and sebum composition.
June 2023 in “Food frontiers” Ginsenoside CK, found in Panax ginseng, can prevent hair loss by controlling certain growth pathways and promoting hair follicle development.
6 citations,
January 2016 in “Annals of Dermatology” Human hair contains more glycosaminoglycans in children than adults, and these compounds decrease with age, possibly affecting hair thickness.
2 citations,
May 2015 in “PloS one” Hair follicle pores help cell survival and growth, even after radiation.
33 citations,
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.
September 2023 in “Journal of microbiology and biotechnology” A type of collagen helps hair grow by boosting cell growth and activating a specific hair growth pathway.
12 citations,
November 2022 in “Toxics” EtG in hair can help detect alcohol use but may be inaccurate in people with certain health conditions.
November 2023 in “Acta scientific pharmaceutical sciences” Different methods accurately measure Finasteride in medicines and body fluids.
22 citations,
August 2013 in “International journal of gynaecology and obstetrics” Acne severity in women with PCOS is linked to younger age, lower body weight, and more body hair, but not to hormone levels.
16 citations,
November 2020 in “International journal of pharmaceutics” Using longer PEG chains helps nanoparticles penetrate hair follicles better, improving drug delivery for conditions like alopecia.