125 citations
,
August 2020 in “Frontiers in Immunology” Men generally have more severe COVID-19 cases and higher death rates than women due to biological differences.
21 citations
,
December 2016 in “European journal of pharmaceutics and biopharmaceutics” Nano-sized lipid particles increase dexamethasone's skin penetration and create a reservoir in the skin layers.
2 citations
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April 2020 in “bioRxiv (Cold Spring Harbor Laboratory)” The skin's basement membrane is specially designed to support different types of connections between skin layers and hair follicles.
18 citations
,
August 2014 in “Lipids” Human hair has more unsaturated fats inside than on the surface, and certain lipids may help bind the outer and inner layers together.
4 citations
,
March 2021 in “Journal of Surfactants and Detergents” Shampoo B, which uses water-soluble silicone, is better at detangling hair in wet conditions due to its two-layer conditioning film.
1 citations
,
July 2022 in “bioRxiv (Cold Spring Harbor Laboratory)” Keratin gene expression helps understand different types of skin cells and their development, and should be used carefully as biological markers.
July 1998 in “Dermatologic Surgery” Various techniques and tools for hair restoration were presented in 1998, including a mathematical model for donor area, use of lasers in surgery, methods for controlling grafted hair direction, and ways to increase graft yield. Satisfaction rates were around 39%, and studies showed trauma and dehydration can damage hair follicles.
July 2025 in “International Journal of Trichology” Biological factors are crucial for developing new hair restoration treatments.
3 citations
,
April 2022 in “F1000Research” Understanding biological mediators in skin healing can improve treatments for skin wounds.
120 citations
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November 2014 in “Biological Reviews” The telogen phase of hair growth is active and important for preparing hair follicles for regeneration, not just a resting stage.
1 citations
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March 2019 in “Lasers in Surgery and Medicine” The conference reported improvements in muscle volume, skin cancer diagnosis, facial and vaginal rejuvenation, and hair growth using various laser treatments.
January 2000 in “BioScience” The document concludes that understanding hair biology is key to treating hair disorders, with gene therapy showing potential as a future treatment.
4 citations
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August 2022 in “Lasers in medical science” Both 1565-nm laser and 1064-nm laser safely and effectively reduce enlarged facial pores, with the 1064-nm laser causing fewer side effects.
47 citations
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May 2012 in “Wiley Interdisciplinary Reviews-Developmental Biology” The conclusion is that understanding how feathers and hairs pattern can help in developing hair regeneration treatments.
20 citations
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November 2014 in “Developmental Dynamics” Palate formation and skin healing share similar biological processes.
June 2025 in “Universal library of medical and health sciences.” External factors like pollution, stress, and poor nutrition can negatively affect hair growth.
195 citations
,
January 2008 in “Photochemistry and Photobiology” Visible light can damage skin and most sunscreens don't block it well; more research is needed on its effects and protection methods.
August 2025 in “Journal of Cosmetic Dermatology” Topical treatments and lasers can improve axillary hyperpigmentation, but no best method is established yet.
January 2020 in “Korean journal of ophthalmology/Korean Journal of Ophthalmology” Minoxidil increases cell layer permeability by reducing tight junction proteins and raising ROS levels.
64 citations
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April 1992 in “Differentiation” Sciellin is a protein that helps form protective layers in skin, hair, and nails.
375 citations
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June 2013 in “Biochimica et biophysica acta. Molecular cell research” Cornification is how skin cells die to form the protective outer layer of skin, hair, and nails.
45 citations
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April 2009 in “Journal of anatomy” Cat claws stay sharp by shedding their outer layer through microcracks formed during activities.
11 citations
,
May 2013 in “Journal of Investigative Dermatology” KRTAP10 proteins help form the hair shaft's tough outer layer by interacting with specific hair keratins.
1 citations
,
January 2023 in “Burns & Trauma” Wnt4 protein makes the outer skin layer thicker in burn wounds by turning on a specific healing pathway and loosening the connections between skin cells.
September 2018 in “Cosmetics” Inositol and arginine solutions improve hair follicle health and turnover.
2 citations
,
April 2024 in “Cosmetics” Plant extracts can help remove permanent makeup without lasers.
1 citations
,
January 1987 Low-output laser irradiation can stimulate or inhibit biological processes depending on the dose.
Tridax procumbens may boost the immune system.
140 citations
,
December 2017 in “Journal of Controlled Release” Microneedles improve drug delivery in various body parts, are safe and painless, and show promise in cosmetology, vaccination, insulin delivery, and other medical applications.
25 citations
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April 1949 in “The journal of experimental zoology” Testosterone applied to rabbit skin increases skin cell growth and changes skin structure.