29 citations
,
July 2004 in “The journal of investigative dermatology/Journal of investigative dermatology” The enzymes Aldh1a2 and Aldh1a3 are involved in making retinoic acid in hair follicles and have different roles in hair growth.
3 citations
,
January 2010 
April 2016 in “Journal of Investigative Dermatology” 38 citations
,
August 1973 in “Journal of Investigative Dermatology” 
60 citations
,
May 2014 in “British Journal of Dermatology” Caffeine affects hair growth and health differently in men and women.
2 citations
,
January 2017 in “Journal of Pigmentary Disorders” Genetics, stress, and health issues can cause early hair greying, which affects self-esteem, and there's no cure, only hair dye.
4 citations
,
March 2008 in “Journal of the American Academy of Dermatology” 3 citations
,
May 2009 in “International Journal of Cosmetic Science” Relaxer treatments damage African–American hair, with commercial products causing more harm than lab-made solutions.
1 citations
,
August 2017 in “Journal of food and nutrition research” The herbal supplement increased hair thickness and reduced scalp oiliness in women.
1 citations
,
December 2021 in “The Open Dermatology Journal” Herbal hair oil with certain herbs can improve hair growth.
April 2017 in “Journal of Investigative Dermatology” Using a stimulating cream shampoo before applying Minoxidil increases its penetration into hair follicles and scalp.
November 2005 in “Reactions Weekly” A man treated with gefitinib for lung cancer grew new hair on his bald scalp.
1 citations
,
May 2023 in “Frontiers in medicine” Hair dyes and perms can damage hair and scalp, but using interventions can reduce harm.
March 2026 in “Zenodo (CERN European Organization for Nuclear Research)” Ratanjot root oil helps hair grow and conditions and colors it naturally.
1 citations
,
November 2025 in “American Journal of Medical Science and Technology” The herbal shampoo cleans well and is safer and better than synthetic ones.
7 citations
,
December 1956 in “Science” 1 citations
,
December 1956 in “Science” 18 citations
,
March 2023 in “Molecular Therapy — Nucleic Acids” Mechanical stimuli and CCL2 can help regenerate hair follicles in adult mice.
January 2025 in “Current Drug Delivery” TrichoSol™ and TrichoFoam™ are stable and effective for personalized alopecia treatments.
21 citations
,
October 2011 in “PloS one” Certain molecules in hair change with age and could be used for cosmetic treatments.
5 citations
,
July 2022 in “PubMed” Hair dyes, shampoos, and conditioners often cause scalp allergies due to common allergens like p-phenylenediamine and nickel.
20 citations
,
September 1987 in “The Lancet” 
June 2026 in “Zenodo (CERN European Organization for Nuclear Research)” The herbal shampoo powder effectively cleans and nourishes hair while being eco-friendly.
6 citations
,
January 2020 in “Elsevier eBooks” Nanoparticles could make hair dyes safer by reducing harmful effects.
January 2025 in “SKIN The Journal of Cutaneous Medicine” Calcipotriol's effectiveness for treating alopecia areata is unclear and needs more research.
March 2021 in “Annals of King Edward Medical University” Clouston syndrome causes issues with teeth, hair, nails, and skin, and has no cure, but recognition has improved.
30 citations
,
April 2013 in “Journal of Investigative Dermatology” Radiation mainly affects keratinocyte stem cells, not melanocyte stem cells, causing hair to gray.
June 2026 in “International Journal of Innovative Technologies in Social Science” Clascoterone cream is a safer, effective acne treatment with fewer side effects.
March 2005 in “Journal of The American Academy of Dermatology” The two lotions used day and night may be a good alternative to minoxidil for hair loss treatment with better cosmetic effects and tolerance.
66 citations
,
January 1987 in “Journal of Investigative Dermatology” Coal tar shampoo increases enzyme activity in hair follicles, enhancing carcinogen binding to DNA.