It is permissible to trim, shave, or wax pubic hair. In some Sephardic communities, this is even the prevailing
custom.
Something that is about to be removed may be a
chatzitzah. Thus, if one intends to remove body hair at some point, or if one periodically removes that hair, removal should be undertaken prior to immersion and not afterwards. Waxing should be done a little in advance so that there is no
chatzitzah problem of wax left adhering to skin.