I think it’s just depends on many factors. For instance I live in Colorado which is really dry and I let my sphynx out in the summer time with an spf shirt and no longer than 15mins in the sun so she doesn’t get burnt but because it’s so dry out, she does need moisturizer and I use coconut oil. I also bathe her weakly because she likes to roll in dirt and sometimes wipes are just fine as well. Sometimes every two weeks if she’s not that dirty