Transdermal Permeation of Tetracaine Hydrochloride by Lecithin Microemulsion: In Vivo

Ethosomes are suggested as an effective delivery method for topical finasteride solutions, requiring the addition of a phospholipid like soya lecithins. The user questions why do-it-yourself solutions don't commonly use ethosomes despite their potential benefits.

The conversation discusses the best vehicle for topical dutasteride, comparing Trichosol, Transcutol, and a gel version. It also mentions using Transcutol with ethanol to enhance transdermal delivery of Bimatoprost.

Topical finasteride in a liposomal formulation reduces systemic absorption compared to ethanol solutions. The user is seeking sources for such products, noting that popular options like morr-f are not liposomal.

Liposomal carriers for topical finasteride offer better targeting, reduced side effects, and less irritation compared to alcohol-based solutions, but availability and cost may limit their use. Minoxidil can dissolve in liposomal carriers, enhancing delivery and stability.

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.

Creating a propylene glycol-free Minoxidil and Tretinoin solution to reduce skin irritation and enhance effectiveness. An emulsifier like lecithin can help mix Tretinoin properly, and Minoxidil foam is an alternative without propylene glycol.