I take naked showers on "bag change day". Right now, I don't have much hair growth because the blood thinners are making me loose my hair.
BUT---I did go through a month of "slowly waxing my belly with the wafer" on change days and learned a lesson from it.
I do use a razor.
I use it in the shower.
I was told I could bath/clean around the stoma with a gentle soap (no fraquence and no lotion in it). So I do it the old fashioned way... lather up with the soap, use a razor that has a THICK plastic boarder around the blades themselves and gently go in circles around the stoma and out to the end of the area the wafer covers.
Now.. just so you know.. rinsing even the gentle soap is important to the wafer, so I do this at the beginning of the shower so it has the entire rest of the shower to "recover" and make sure the soap is rinsed off. Because I do this carefully and slowly, my sensitive skin has not acted up yet... I don't know yet what it will do when winter hits and it gets more sensitive.
BTW-- When you use a razor with thick plastic around the blades, you don't get near the stoma. you also don't get the hair right up by the stoma. So.. That is what I make sure is covered well with skin barrier and some good, non-stinging stomapaste. The little hairs lay down under the paste and don't get caught up in the wafer.