- Reaction score
- 224
It never ceases to amaze me how complex hormones are. For example, take thyroid hormones. Adequate levels of T3 (most active form of thyroid) are necessary in order to have a normal hair cycle (i.e. no premature catagen). This balance is very delicate. Too high concentrations or too low concentrations induce massive catagen. So, it is not always better to saturate all cell surface receptors, because the induced transcription may be way too intense. For example, there may be proteins that are hair-protective in the correct amounts but highly damaging to the follicle in too high amounts (or too low). I am wondering if this is also the case with E2. The concentration is very hard to figure out, but I am doing well with 1mcg/mL. If anything I would sooner lower the concentration than increase it. I think 5mcg (total application amount) is very safe, and a commonly quoted 20% absorption (ethanolic vehicle) will only yield a 1mcg systemic absorption, which is totally acceptable. Good luck with it, and please report back!I will test probably 5 mcg E2, whole scalp, that targets 200 nanoM at assumed 30 % dermal delivery. By assuming 20% systemic delivery it can't be a problem. The test is still based on in vitro effect on DP cells.
I have still a doubt about the target concentration, as under HRT with estradiol valerate 8 mg/day, E2 serum concentration is about 1 nanoM, that is approx 10 X the normal concentration for a male and compares to female pre-menopause serum concentration, so 200 nanoM could be still "topical E2 megadosing".
Hopefully, I'll run the test in combination with ARV-110 PROTAC AR degrader I have ordered, that should allow microdosing.
Cyclosporine is a relatively large molecule. What kind of vehicle are you using for it?
Awesome that you sourced the AR degrader, it should be highly effective. Please be careful with it. Better start too low than too high.
I just use an ethanolic vehicle for Cyclosporine. I got it from the patent of RiverTown Therapeutics (now abandoned) here. They were using a concentration of 0.12%. There are also other formulations that used 1% concentrations where some results were observed. Eyedrops are using 0.05% which is effective for that purpose and FDA approved. Does not need a fancy vehicle as the extremely low percentage that is being absorbed probably is enough to induce effects. I am not sure about the concentration I am using (0.1%) and may increase in the future. However, I am very hesitant to do so as I am quite scared of systemic effects (and rightfully so).
Last edited: