The honest answer: put the brush away
A Sphynx does not need brushing, ever, because the breed is effectively hairless, covered only in a fine down that feels like warm suede. Brushing would do nothing useful and could irritate exposed skin. What surprises new owners is that removing the coat does not remove the grooming work; it changes it. A furred cat's coat absorbs the skin's natural oils and carries them away as hairs shed. A Sphynx keeps producing those same oils with nowhere for them to go, so the skin itself becomes the thing you clean, on a schedule closer to a dog's than to a typical cat's. Replacing the brush with a cloth and a bath routine is the whole secret to a comfortable, clean Sphynx.
What builds up on hairless skin
Within days, skin oil mixed with everyday dust leaves a slight tacky film, most noticeably in the folds around the neck and shoulders, in the armpits, between the toes, and at the base of the claws, where a brownish buildup collects. The breed's large, open ears also gather wax faster than furred ears, because there is no hair at the opening to slow debris. Left alone, that oil can mark light bedding and upholstery, and skin that stays grimy can become irritated. None of this is a health emergency; it is simply the breed's normal maintenance, and owners who build a light weekly rhythm find the Sphynx no harder to keep than any other cat, just different.
The wipe-down and bath routine that replaces brushing
Two or three times a week, wipe your Sphynx down with a soft cloth dampened with warm water, working over the folds, belly, toes, and tail, and check the ears at the same sitting, wiping only the outer ear you can see. About once a week, or as your cat's skin dictates, give a proper bath in lukewarm water with a gentle cat-appropriate cleanser, keeping the room warm and drying her thoroughly straight away, since a hairless cat chills quickly and will seek a heated blanket the moment she is out. Never scrub, and skip any product that leaves skin tight or flaky; the aim is to lift oil, not strip the skin. Most Sphynx raised with baths from kittenhood accept them calmly, especially when the routine is short, warm, and always ends the same way.
Skin changes that deserve a vet's eye
Because the skin is fully visible on this breed, you are well placed to spot trouble early, and regular wipe-downs are when you will spot it. Raise persistent redness, repeated pimples or dark spots that spread, flaking that does not settle with the normal routine, or any sore that fails to heal with your veterinarian, and mention how long it has been there. A Sphynx who suddenly becomes much oilier, itchy, or uncomfortable in a jumper she usually wears happily has also changed in a way worth reporting. Noting the date a mark first appeared turns a vague worry into useful clinical information. In KinsLe, Care Teams can hold the wipe-downs, ear checks, and weekly bath as separate assigned duties for your Sphynx, each timestamped on completion, so this skin-based routine stays as regular as brushing day is for a furred cat.