Mr Bubble gave me a rash as a kid lol
I know this isn't technically a bubble bath but here is what I do in the tub and its better than any bubble bath I've had. I take half a cup of oatmeal and put it inside a bit of panty hose (I use old ones with runs and cut them up and then tie the ends off so its a little satchel of sorts) and then tie it on the end of the facet so the water runs thru it. The water turns milky and sort of silky like. If you want some scent to it, add a few drops of an EO like lavender since its meant to be relaxing.
Now I want a bath lol