Weekly bathing is normal and necessary for a Sphynx
Almost every other cat breed needs less bathing than owners expect; the Sphynx needs more. With no fur to absorb the oils the skin produces, those oils sit on the surface, pick up dust and litter particles, and leave the skin feeling tacky within days. Most Sphynx cats need a full bath about once a week, and stretching beyond every two weeks usually means oil has transferred onto bedding, clothing, and furniture, and built up in the folds where it can irritate the skin.
You will learn your own cat's pace within the first month. What does not work is treating her like a coated cat and bathing monthly; by then the build-up in her wrinkles, around her nails, and in her ears will take real scrubbing to clear, which is harder on the skin than a gentle weekly wash.
How to wash skin, folds, ears, and nail beds
Fill the tub or sink with warm water before bringing her in, use a very mild, fragrance-light cat wash, and lather gently with a soft cloth, working into the wrinkles on the forehead, neck, legs, and belly where oil settles into the creases. Sphynx skin is not especially fragile, but it has no fur buffer, so avoid rough exfoliating and harsh products that would be diluted by a coat on another breed.
Two areas separate a proper Sphynx bath from a quick rinse. The ears produce noticeable dark wax and need gentle cleaning with a damp cloth or vet-approved ear cleaner on the parts you can see, never probing deep into the canal. Rinse the whole body thoroughly afterward, because soap residue on bare skin causes itching she has no coat to protect her from.
Drying, warmth, and skin care between baths
A wet Sphynx gets cold fast. Lift her straight into a warm towel, dry her completely including inside the folds, and keep her in a warm room until her skin feels dry and warm again. Between baths, a quick wipe-down with a warm damp cloth handles light oil on the body, and changing her bedding frequently does as much for skin cleanliness as any product, since she spends hours pressed against those fabrics.
Sun exposure deserves a mention in this breed's grooming routine. Bare skin can burn, and a Sphynx who suns herself in a window for long stretches should have shade options and limited exposure during the strongest light. Ask your veterinarian before using any sunscreen, because cats groom products off their skin and ingest them, and that concern is multiplied on a cat with no coat.
Skin changes that need a vet, not another bath
Weekly contact with your Sphynx's skin means you will spot changes early, so use that advantage. A rash that spreads, bumps that do not clear within a few days of normal bathing, blackheads clustering heavily on the chin or tail, or skin that becomes unusually oily or develops an odor despite the weekly routine are all reasons to book a veterinary visit rather than bathe more aggressively. Sphynx can develop skin conditions that need specific management, and scrubbing harder at home delays the right answer.
Also see your vet if her ears produce discharge with a strong smell, if she scratches one ear persistently, or if the nail-bed build-up comes with redness or swelling around a toe. Those are localized problems with specific causes, and catching them early in a breed you handle this closely is straightforward.
A weekly bath plus ear care plus nail-fold cleaning is a standing rota, not an occasional chore, and KinsLe Care Teams lets you assign each part to a household member and see at a glance which pieces of your Sphynx's skin routine are finished each week.