356 citations
,
December 1986 in “The journal of cell biology/The Journal of cell biology” Hair and nail cells share similar proteins, indicating a common differentiation pathway.
20 citations
,
November 2019 in “International Journal of Environmental Research and Public Health” Breathing in high levels of certain air pollutants significantly increases women's risk of developing Polycystic Ovary Syndrome.
May 2009 Acidic sandy clay damages archaeological hair the most, while dry conditions preserve but make it brittle; silicone oil can help keep the hair flexible.
4 citations
,
January 1994 in “Yakugaku zasshi” EPC-K is stable except at very acidic pH or when exposed to sunlight, and it can decompose in low ethanol concentrations.
February 2024 in “Trends in Sciences” Store Tectona grandis leaf extracts in slightly acidic, light-protected conditions for best stability.
June 2019 in “Asian Journal of Chemistry” Finasteride forms three new products under acidic stress.
10 citations
,
March 2005 in “International Journal of Cosmetic Science” Oxidation changes human hair by breaking down fats and forming new acidic groups, affecting how it interacts with conditioners and cosmetics.
January 2021 in “Lecture notes in mechanical engineering” High temperatures, acidic conditions, and too much coconut oil damage hair, while a pH of 5 to 7 keeps it healthy.
10 citations
,
September 2020 in “Biopolymers” Hair's structure and properties change with pH; acidic pH maintains strength and less swelling, while alkaline pH increases water content and swelling.
51 citations
,
January 2014 in “International journal of trichology” Shampoo pH can affect hair health, with alkaline shampoos potentially causing damage and acidic shampoos reducing frizz.
10 citations
,
August 2021 in “Cosmetics” The best shampoo formula used 1% high-weight hyaluronic acid, 10% acidic sophorolipid, and 1% salt for effective hair conditioning and cleansing without sulfates or silicones.
62 citations
,
November 2013 in “Journal of Human Evolution/Journal of human evolution” Forensic DNA Phenotyping can help predict physical traits from crime scene DNA to identify suspects.
36 citations
,
December 2019 in “Molecular biology and evolution” Cysteine-rich keratins evolved independently in mammals, reptiles, and birds for hard skin structures like hair, claws, and feathers.
11 citations
,
February 2022 in “Carbohydrate Polymers” Ginkgo biloba polysaccharides may reduce inflammation and promote hair growth in mice with hair loss.
11 citations
,
June 2013 in “Journal of Chemical Education” Minoxidil detects nitrite in water, creating a simple, cheap test.
10 citations
,
January 1994 Hair can be straightened using different chemicals, not just strong alkali.
April 2024 in “Current journal of applied science and technology” The organic hair ointment is safe, promotes hair growth in male rabbits, and has good stability and pH for human use.
December 2023 in “Frontiers in pharmacology” Progesterone initially worsens but later reduces neuropathic pain in mice, through different mechanisms.
May 2021 in “British Journal of Dermatology” Different tiny organisms live in human hair follicles and can affect both health and skin conditions, including acne and hair loss.
April 2021 Human hair keratins can self-assemble and support cell growth, useful for biomedical applications.
October 2015 in “Cosmetic Dermatology” Hair is complex, varies in type, and plays a big role in attractiveness and culture.
233 citations
,
February 2018 in “Polymers” Chitin and chitosan are useful in cosmetics for oral care, haircare, and skincare, including UV protection and strength improvement.
67 citations
,
July 2020 in “Journal of Ginseng Research” Korean Red Ginseng has beneficial components that help with stress, immunity, fatigue, memory, blood flow, and disease protection.
54 citations
,
September 2000 in “Archives of dermatology” A hair-straightening product caused widespread hair loss and scalp injuries, mainly affecting African American women.
48 citations
,
August 2001 in “Experimental dermatology” Researchers created a quick, cost-effective way to make skin-like tissue from hair follicles and fibroblasts.
40 citations
,
February 2002 in “International Journal of Dermatology” Permanent hair dye damages hair but it mostly recovers after 8 weeks; using certain hair care products can help repair it.
39 citations
,
July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” FGF and EGF are crucial for hair follicle development and growth.
30 citations
,
December 2010 in “Biochemical and biophysical research communications” The Gsdma3 gene is essential for normal hair development in mice.
30 citations
,
January 2009 in “The scientific world journal/TheScientificWorldjournal” Hair is hard to dissolve because of its complex proteins, but certain solvents that break specific bonds and hydrate can do it.
20 citations
,
October 2017 in “Drug testing and analysis” Drugs localize differently in hair strands based on their properties.