Get a load of this, cats
https://smj.journals.ekb.eg/article_42083_24b61cbba4be9982db23c318414034c0.pdf
They did miscroneedling in conjunction with topical duta and this is what they found at the end of treatment with regards to serum DHT and T levels:
"Testosterone and DHT levels were measured in group 1 only. Total testosterone was in
the normal range (0.47-9.8 ng/ml); after treatment; there was increase in serum
testosterone, but there was no statistically significant difference in mean testosterone
level before and after treatment. DHT was in the normal range (250-990 pg/ml); after
treatment; there was decline in serum DHT, but
there was no statistically significant
difference in mean of DHT level before and after treatment (Table 9)."
There was a 5.3% change in serum DHT.
That said, the study is kind of strange and confusing and I haven't read the whole thing yet.
First, they applied 0.02% duta, is that the normal dose?
Here's the weird part:
IV.4) Treatment schedule: 13
sessions were done according to
the following schedule:
v Once every week for eight weeks
(week 0, 1, 2, 3, 4, 5, 6, 7).
v Once every two weeks for one
month (week 9, 11).
v Once every month for three
months (week 15, 19, 23).
So, in the last three months of the study, they only did three applications. They say:
Assessment was done monthly and
one week after the last session
(24th week)
So those final values were done a week after the last session. Maybe that's why they got such a small impact on DHT.
Have there been any other studies with topical duta?
UPDATE:
Here's one with duta mesotherapy
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5596657/
"It is believed that systemic absorption after mesotherapy is equal to after oral dutasteride because the scalp is highly vascular.[
4]
We did not detect significant differences between serum hormone levels before and after treatment, suggesting that the absorption of dutasteride after a nonintensive treatment protocol is
worthless. The limitations of our study are the small sample size and the short follow-up."