Skin that has no coat to help it
Caring for a Sphynx cat's skin starts with understanding what fur normally does for other cats. A coat absorbs the oil that skin glands produce and carries it away from the body. A Sphynx produces the same oil with almost nowhere for it to go, so it collects on her skin, transfers to bedding and furniture as faint brown marks, and gathers in every fold and crease she has. Left alone it does not usually harm her immediately, but it makes her feel greasy, attracts dirt, and can clog pores. Her skin care is therefore more like skin care for a person than grooming for a cat: regular gentle washing, attention to folds, and protection from sun and cold.
The weekly bath, done gently
Most Sphynx cats need a bath roughly once a week, adjusted to how quickly your own cat turns oily. Use lukewarm water and a small amount of mild shampoo made for cats, lathering with your hands or a very soft cloth rather than anything abrasive, and work into the folds around her neck, armpits, and belly. Rinse thoroughly, because residue left on bare skin itches. Wrap her in a warm towel straight afterward and dry her completely; a hairless cat loses body heat fast when wet. If her skin is dry and flaky a day after every bath, the baths may be too frequent or the shampoo too harsh, which is worth adjusting with your vet's guidance rather than by adding oils or lotions made for people.
Ears, claws, and the places oil hides
Between baths, the details matter as much as the wash. Sphynx ears produce a dark, waxy build-up quickly because there is no hair at the ear opening to slow it; wipe the visible outer ear with a soft damp pad every few days and never push anything into the canal. The same oil darkens around the base of each claw, so gently press each toe to extend the claw and wipe the fold during bath time, trimming the tips while you are there. A quick midweek wipe with a warm, damp cloth over her back and belly keeps her comfortable between full baths and gives you a regular look at her skin.
Sun, warmth, and everyday protection
Bare skin sunburns. A Sphynx who sleeps in a sunny window for hours can burn just as a fair-skinned person would, so provide shade she can move into and be cautious about long midday exposure through glass. Do not apply human sunscreen, which she will lick and which may contain ingredients unsafe for cats. In cooler rooms she will seek heat sources; guard radiators and heated pads so she cannot press bare skin against a surface hot enough to scorch, and offer blankets and a sweater made for cats if she enjoys wearing one.
Skin changes that deserve a vet visit
Contact your vet if you find pimples or blackheads that spread, a rash that does not settle between baths, greasy patches that return within a day or two of washing, sores she keeps licking, or any new lump in the skin. Sphynx cats are prone to certain skin conditions that home bathing cannot fix, and a change in how much oil she produces can also reflect wider health. Photographing a patch when you first notice it helps you show whether it is growing, which is more useful to your vet than a description from memory.
One bath rhythm for everyone who helps
A Sphynx cared for by several people can easily be bathed twice in three days or not for two weeks, and her skin shows both errors. A fixed day with a visible record solves it. You can set her bath and ear wipe as recurring jobs in KinsLe Care Teams so whoever is home keeps the same weekly rhythm.