Hello Cathrine @cathrinecathrine
I bought mine online, fairly inexpensive, an online store in England but the product was from Bulgaria, it came on time, this is the link: https://www.etsy.com/ca/listing/1362912404/organic-smoke-tree-leaf-cotinus
For the soak: Fill a cooking pot with water (approx 3-4 liters) and add 5-6 tablespoons of the crashed leaves, bring it to boil, and simmer for about 30 min with the lid on. After sraining it, let it cool a bit and it is ready to use. For one soak I usually use about 1/2 liter, and keep the rest in the fridge, and use it up within 2 to 3 days.
For the sitz bath: I put appr 3 teaspoons of salt (tablesalt or sea salt), add 1/2 l of the leaves soak, mix to dissolve the salt and fill up with warm (not hot!) water. I soak in it for 15 minutes, especially after bowel movement - it helps me with the itching due to the hemorrhoids. I tried scented sea salt crystals as well, although some sea salts have essential oils added to them, which I found irritated my skin; although my rear end smelled heavenly then, lol😉
I hope the above helps you.
Best wishes for speedy recovery,
Eva G