July 2023 in “bioRxiv (Cold Spring Harbor Laboratory)” Chitosan slows root hair growth and causes a buildup of callose at low concentrations, but at high concentrations, it only inhibits growth without callose buildup.
79 citations
,
January 2017 in “Dermatology practical & conceptual” Correcting nutrient deficiencies may help with hair loss, but the benefits of supplements without a deficiency are uncertain and could be harmful.
April 2025 in “International Journal of Advanced Research in Science Communication and Technology” Herbal hair gummies with ingredients like fenugreek and biotin may help hair growth and are safe and stable.
March 2014 in “Medicina cutánea ibero-latino-americana” Melatonin applied to the scalp helps increase hair density in people with early hair loss.
24 citations
,
July 1987 in “Dermatologic Clinics” Systemic diseases can cause hair loss, which is often reversible with treatment.