Dry punani and butthole

(F, 60kg, 30mg) My lower outer labia all the way to my butthole is super dry and sensitive, it has been so for more than 3 weeks, I am on day 55.

Will it go away, It is very itch and irritated, I am using coconut oil, an external vaginal cream for moisture + vaseline on my butt, i think it stops it from getting worse but not really healing.

I also only use an unscented soap and water in the shower and use natural hypoallergenic detergent to wash my underwears. Ive stopped wearing underwear to bed and sleep on a towel so the creams dont get on my sheets.

Please if you have tips leave them for me because I can’t live like this.

Ive been on accutane twice before (didnt finish) and didnt have this side effect.