Development and Validation of a UPLC Method for Determination of Content Uniformity in Low-Dose Solid Drug Products Using the Design Space Approach

The user is using 0.1% dutasteride, 1% minoxidil with 2% procapil and 0.005% caffeine in the morning, and 1% minoxidil with 2% procapil and 0.01% tretinoin at night. They are concerned about the solution vehicle's effectiveness in preventing systemic absorption and ensuring the products stay around the hair follicles.

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.

A user is seeking feedback on a homemade topical finasteride formula for hair loss, consisting of 7.5 mg of finasteride, propylene glycol, ethanol, and distilled water. They aim to achieve a 0.0125% solution by applying 2 ml daily.

The conversation discusses the best ethanol and propylene glycol ratio for homemade topical finasteride, with a focus on absorption and drying issues. The user shares their experience using a 50% propylene glycol, 30% ethanol, and 20% water solution, and considers adjusting the ethanol content for better results.

OP asked if a product from Amazon is sufficient to dilute finasteride. A user advised against using propylene glycol alone, suggesting a pre-made solution instead.

A user is seeking a pharmacy to compound a topical solution containing Minoxidil, Finasteride, Alfatradiol, Melatonin, Latanoprost, and either RU58841 or Pyrilutamide. They prefer a professional compounding lab over DIY methods.