Trans-Epidermal Elimination Due to Insulin Formulation: Report of a Rare Adverse Effect

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 applied tretinoin to their scalp for hair loss and found brown particles in the cream. They are seeking information about these particles.

The user started using topical latanoprost and dutasteride, experiencing significant hair shedding and scalp itchiness, possibly due to an allergic reaction. They are considering stopping the treatment if the shedding is linked to an allergy.

The conversation discusses scalp itching and tenderness after microneedling, despite using medicated shampoos and proper sanitation. The user plans to see a dermatologist and is concerned about possible infection or allergic reaction.

Concerns about metal particles from dermapen or dermaroller needles potentially entering the skin and lymph nodes, similar to tattoo needles. Discussion includes the possibility of using Minoxidil, finasteride, and RU58841 for hair loss treatment.

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.