Chemical treatments weaken hair's thermal stability and structure.
52 citations
,
February 2005 in “Biopolymers” Chemical hair straightening changes hair proteins and mostly fixes broken bonds.
8 citations
,
October 2018 in “Applied sciences” Alginate spheres help maintain hair growth potential in human cells for hair loss treatment.
61 citations
,
September 2020 in “Bioactive Materials” A special dressing called FEA-PCEI can speed up wound healing, reduce scars, and help grow new hair follicles, but only at the right dosage.
January 1990 in “Springer eBooks” Some chemicals can permanently or temporarily remove color from skin and hair, which can be distressing and is not well-regulated in cosmetics.
Polyethylene glycol 400 and glycerol are effective as moisturizers in anti-hair loss cream with saw palmetto extract.
10 citations
,
January 2004 in “Dermatologic Surgery” Storing hair follicles in special buffers with added protective substances can increase hair growth and reduce cell death.
1 citations
,
January 2020 in “Seoul National University Open Repository (Seoul National University)” PDE3 inhibitor may help treat hair loss by promoting hair growth.
November 2025 in “International Journal of Science and Research Archive” Oxidative dyes damage hair more than semi-permanent dyes, but new technologies help protect hair while coloring.
103 citations
,
February 1972 in “Proceedings of the National Academy of Sciences” A unique enzyme in guinea pig hair follicles helps form protein cross-links in hair.
10 citations
,
January 2019 in “in Vivo” Finasteride boosts stem cell signals for hair growth.
July 2012 in “EFSA supporting publications” The EFSA maintained its view that spermidine's effect on hair growth is related to disease treatment and does not meet the health claim criteria.
March 2024 in “Journal of Microbiology and Biotechnology” Phloroglucinol may help improve hair loss by promoting hair growth and reducing oxidative stress.
July 2024 in “Journal of Investigative Dermatology” A single medium, PRIME AIRLIFT, supports better human hair follicle formation in grafts.
1 citations
,
January 2013 in “PubMed” Permanent wave treatment with thioglycolic acid changes hair structure by altering disulfide bonds.
October 2014 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Adding dalteparin and protamine microparticles to platelet-rich plasma can boost hair growth more than using platelet-rich plasma alone.
23 citations
,
September 1992 in “Archives of Dermatological Research” Cepharanthine and minoxidil promote cell growth and delay hair cell maturation.
11 citations
,
January 2000 in “Journal of cosmetic science” Hydrolyzed wheat proteins penetrate all hair types effectively.
September 2025 in “Polymer Korea” Parsley-coconut oil nanoemulsion effectively promotes hair growth.
13 citations
,
January 2007 in “International journal of pharmaceutics” Papain cream removes hair better than papain gel, causing hair follicles to widen and skin to thicken.
2 citations
,
January 2018 in “Biomolecules & therapeutics” Polyamidoamine dendrimers can change the strength and direction of electroosmotic flow through the skin, affecting drug delivery.
A 15% bitter melon leaf extract shampoo promotes the most hair growth.
May 2026 in “International Journal of Scientific Research in Chemistry” Finasteride breaks down into new compounds under acidic conditions.
37 citations
,
May 2007 in “International Journal of Pharmaceutics” PPCM microspheres allow controlled finasteride release over 24 hours.
75 citations
,
September 2015 in “Acta biomaterialia” Alkylation of human hair keratin allows for adjustable drug release rates in hydrogels for medical use.
March 2023 in “International Journal of Applied Pharmaceutics” The β-sitosterol hair gel is effective and promising for treating hair loss.
1 citations
,
November 2022 in “Experimental cell research” Prostaglandin E2 collagen matrix may help stimulate hair growth.
A new peptide, murikal/SPR4, was found to significantly increase hair growth in mice, and its liposomal topical formulations enhanced hair growth more than commercial products. However, results on human scalp skin were unclear, needing more tests.
1 citations
,
December 2016 in “Vìsnik farmacìï” The best gel to treat a type of hair loss has 1% sodium alginate, 1% carbopol, 5% glycerin, 0.2% potassium sorbate, and water.
40 citations
,
June 2013 in “Biomaterials” Scientists created 3D hair-like structures that could help study hair growth and test treatments.