Purax Anti-Transpirant
I use this Product since 5 Years. Apply once a week and you're good. I then don't sweat or stink for at least one week! Usually after 10 days or so, I smell a little bit, but no sweat then. The day after, I apply it again. I really LOVE this stuff. I used to stink like a donkey under one arm. Yes only one.
This little bottle lasts for months.
Link:
Purax Anti-Transpirant Roll-On Extra Stark, 1er Pack (1 x 50 ml)
https://www.amazon.de/dp/B0032GAQGC/..._vtx-EbPHY617F