I've used it on cats with fur but that was over 10 years ago. Incidentally I also had a sphynx but didn't use it on her. Do you already have your sphynx? I used to give mine a bath so that would remove some of the dander I would have thought.
I have no idea. The worst allergic reaction to a cat I’ve ever had was to a sphynx though. They can be super allergenic. I can’t see how it could be dangerous so maybe give it a try and see how it goes.
I bath mine once a week with baby shampoo and I use a bath glove as they can get quite dirty. I tried jumpers for them but they hated them, so now they have 4 different blankets that they love. I also used fluffy beds that clipped onto the top of the radiators. They're amazing animals!
Mine used to hate jumpers too. Her favourite thing was an extremely snuggly dressing gown (she didn't wear it but slept in and under it) which I bought just for her. She was a brilliant cat and I really miss her.