Youll want Lethean Water to reset those perks, and getting it is pretty straightforward. The Kuttenberg apothecary sells it ready-made for about 80-100 Groschen, or grab the recipe for around 250 if you're feeling crafty. For brewing it yourself, you'll need Spiritus base, 2 Wormwood, 1 Belladonna, and 1 Henbane - grind that wormwood first, then add belladonna and give it 3 turns, finish with henbane and distill.

If you're looking to save some coin, the Thunderstone quest in Grund hands out the recipe for free which is a nice bonus. The drink itself works instantly to refund all your perk points, though fair warning, that 40% alcohol content might leave you stumbling - keep some Hair o' the Dog handy just in case.

Good to know that you can respec as many times as you want, just make sure you've got enough Lethean Water on hand when the urge to try a new build hits.