Question about Onsen and Makeup

Hello,

I'm going to Japan for the first time, visiting Hokkaido and Tokyo, and was hoping to try out the onsens there.

Apologies for the strange question, but I unfortunately had a medical issue that caused a fair amount of (hopefully temporary) hair loss within the past few months, meaning that right now I don't have any eyebrows. If I need to go outside, I basically draw them on with a makeup pencil, but I know the expectation is to shower before entering the baths + the baths themselves would have steam? Would it be considered inappropriate to have the eyebrow pencil makeup/would the steam/showers damage it and reveal my lack of eyebrow hairs? I'm very self-conscious of it, and I know it makes me look awful.

Also, is there any weirdness towards people who have had surgery? In relation to scarring or unnatural looking bodies? I had reconstructive surgery a few years ago, so am wondering if that might cause issues.

I guess all of this makes me wonder if it would be better for me to book a private onsen? I initially didn't mind going to a public women's only onsen, but the above medical issues (specifically the lack of eyebrows…) have made me much more self-conscious of my appearance.

by catplace