Whats a good home remedy for a vaginal cyst?

None: Vaginal cysts are atypical and usually indicate a fluid filled sac that is under the skin which usually requires surgery to remove them. If the cyst is more on the outside of the vagina around the opening then soaking in a warm tub with epsom salts, aveeno (oatmeal) bath or other products can help them drain on their own.

Vaginal Cyst: Agree with earlier recommendation for warm bath with Epsom salts. Warm compresses may also help potentially.