Irritation and Sensitization Potential of Approved Topical and Transdermal Delivery Systems: A Retrospective Study

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 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.

The user is experiencing irritation from using PG with RU58841 and is seeking alternative solutions like K&B in the UK. They report redness, itchiness, and flaky skin from the current treatment.

The conversation discusses the potential effectiveness and risks of using topical finasteride for hair loss, with considerations about using DMSO as a vehicle for application. Concerns are raised about DMSO's safety, absorption issues, and the systemic effects of topical finasteride.

The conversation is about whether to use gloves when applying 5% RU58841 to avoid systemic absorption and if washing hands with water is sufficient. Users question the concern, noting it is applied to the scalp.

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.