You can buy depilatory that is made for intimate areas but you still can’t put it on the vagina or the butthole. It burns.
I am so sorry, you are going to be miserable for a few days. Lotions and balms are probably going to make it sting even worse.
I love Slack Wyrm. It is best to start from the beginning and catch up so you learn all of the lore, and there is a lot of lore!
He posts everything a week early to Patreon and holds court there over whether anything should change and often the comics on Patreon and what gets posted to the website and socials differ a bit.