December 2025 in “Cureus” Avoiding friction and using topical treatments can significantly improve rough skin caused by repeated rubbing.
11 citations
,
January 2006 in “International Journal of Cosmetic Science” Some oils can penetrate hair and reduce the stickiness between fibers, but mineral oil cannot.
March 2024 in “International journal of molecular sciences” Meibomian glands are highly specialized and differ significantly from other sebaceous glands in structure and function.
Guaraná extract effectively reduces oiliness in skin and hair without harming skin health.
2 citations
,
January 1990
September 2025 in “Journal of Surfactants and Detergents” Shampoos with sodium lauroyl methylaminopropionate improve hair lubrication and reduce irritation.
A rash from semaglutide may be due to propylene glycol, not the drug itself.
10 citations
,
November 1984 in “Journal of Colloid and Interface Science” The study found that the Marangoni effect causes the uneven wetting of surfactant-coated hair due to the surfactant moving into the water.
April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” Lack of TG2 increases fat storage and lowers cell cleanup in skin oil cells.
June 2025 in “British Journal of Dermatology” Licensed hair gloss products improve shine and smoothness but require stricter regulation to ensure safety.
4 citations
,
January 2017 in “International journal of trichology” Castor oil can cause severe hair matting.
1 citations
,
January 2015 in “Actas dermo-sifiliográficas/Actas dermo-sifiliográficas” Latanoprost eye drops caused excessive cheek hair growth and eyelash whitening in a woman.
1 citations
,
March 2010 in “International Journal of Cosmetic Science” The Aqualon SLT device measures hair stiffness and slipperiness to evaluate hair treatments.
97 citations
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January 2005 in “Wear” Human hair and skin friction vary by ethnicity, hair type, and environmental conditions.
December 2003 in “The journal of investigative dermatology/Journal of investigative dermatology” Glycerol may improve wound healing and prevent keloids, a device can measure itch intensity, male pattern baldness is highly heritable, and fumaric acid esters may work for psoriasis by causing cell death in T cells.
19 citations
,
July 1993 in “Journal of Applied Toxicology” Different oil products cause varying levels of skin irritation in mice, which could potentially lead to tumors.
December 2021 in “Signal transduction and targeted therapy” Increasing sebum production might help reduce fat and improve metabolism.
November 2022 in “Journal of Investigative Dermatology” Deleting MPZL3 increases skin oil production and reduces body fat.
6 citations
,
January 2000 in “Dermatology” A girl's severely tangled hair couldn't be fixed and had to be cut due to a rare condition called plica neuropathica.
42 citations
,
December 2018 in “International Journal of Phytocosmetics and Natural Ingredients” Olive and Brazil nut oils improve hair strength, shine, and softness better than silicone.
11 citations
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November 2003 in “PubMed” Treatments with certain oils and resins make hair shinier, while zinc oxide and synthetic sebum make it duller.
1 citations
,
August 2020 The Shaven mutation in mice affects hair growth and causes a greasy coat due to abnormal lipid content.
March 2003 in “Clinics in Dermatology” 66 citations
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September 2008 in “The Journal of Dermatology” Gastrointestinal issues are important risk factors for sebaceous gland diseases in Han adolescents.
2 citations
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December 1954 in “Experimental Biology and Medicine” Fluid loss through rat skin is minimal when inactive but increases with skin activity and hair growth.
5 citations
,
July 2014 in “Actas dermo-sifiliográficas/Actas dermo-sifiliográficas” Latanoprost eye drops caused excessive hair growth and eyelash whitening in a woman.
Treating hair with 1M sodium hydroxide increases its friction, making it better for small medical knots.
January 2026 in “Saudi Journal of Medical and Pharmaceutical Sciences” Gel D shows promise as a natural hair care solution for traction alopecia.
12 citations
,
May 2021 in “Clinical Interventions in Aging” Men with androgenetic alopecia have oilier and less hydrated scalps, especially in sensitive areas.
43 citations
,
September 2001 in “Scanning” Hair treatments like bleaching increase friction by exposing tiny pores on the hair surface.