HPTLC Assay of Nicotine and Cotinine in Biological Samples

Nicotine use appears to increase hair shedding, with users noticing more hair loss when using nicotine and less when abstaining. Some users plan to quit nicotine and start treatments like finasteride and oral minoxidil to improve hair quality.

Topical finasteride may have higher systemic absorption and lower efficacy when using a Propylene Glycol/Ethanol formulation compared to the hydroxypropyl chitosan (HPCH) formulation. The safety profile of topical finasteride relies heavily on the HPCH formulation, and using standard solutions might lead to different pharmacokinetics.

Stopping nicotine might help hair health, but its impact varies by individual. Minoxidil and finasteride are mentioned as treatments used alongside nicotine use, with mixed results on hair density.

The user is seeking an alternative solvent for pyrilutamide due to skin irritation from ethanol and propylene glycol. They experienced similar issues with topical minoxidil.

Two Chinese suppliers provided legitimate RU58841, confirmed through a free drug testing service. The vendors were Shaanxi Greenyo Biotech and Lyphar, found on Made-in-China.

Nicotine may negatively affect hair by reducing blood flow due to its vasoconstrictor properties, but its impact might be minimal. Finasteride users are advised to avoid nicotine to prevent potential hair loss issues.