A Cat With No Built-In Coat
A hairless cat lives without the two jobs fur normally does quietly all day: holding a layer of warm air against the skin and screening sunlight before it reaches the surface. That changes care in both directions at once. In cold weather she loses body heat quickly, especially across her ears, tail and belly, and she will seek out radiators, laps and freshly dried laundry. In bright weather the same bare skin can redden and burn, with the ears, nose bridge and shoulders usually affected first because they catch the most light and have nothing covering them.
Warmth That She Can Choose
Give her warmth as a choice rather than a single hot spot. Layer soft blankets in the beds she already prefers, raise at least one bed off a cold floor, and place a covered, warm sleeping den in the room where the household spends the evening. Lightweight, well-fitting cat jumpers help during the coldest spells and for trips to the vet, but check the fit daily: fabric that rides up can chafe bare skin, and a jumper worn constantly traps moisture and natural skin oils against the body. Wash jumpers and bedding often, because a hairless cat leaves more skin oil on fabric than a coated cat does.
Keep her away from direct heat sources she cannot judge well. Radiator beds are popular, yet bare skin pressed against a very hot surface for a long sleep can become sore, so add a folded blanket as a buffer and position fireguards so she cannot settle too close to open flames or heaters.
Sun Safety Indoors and Out
Sun protection matters even for a cat who never goes outside. A favourite windowsill can deliver hours of unbroken sun through glass, and she will happily sleep through the exposure. Fit film or blinds on her sunniest window, rearrange her perch so part of it is always shaded, and close curtains during the strongest midday light in summer. If she does go into an enclosed garden, give her a shaded shelter she actually likes, limit time outside to cooler parts of the day, and bring her in if her skin feels hot or looks flushed.
Do not apply your own sun cream to her. Products made for people can contain ingredients that are unsafe when a cat licks them off her skin, and a hairless cat grooms her whole body thoroughly. If you want a protective product for unavoidable exposure, ask your veterinarian to recommend one made for cats and test it on a small patch of skin first.
Skin Care That Links Both Seasons
Warmth and sun care meet in her skin routine. Bathing on the schedule your vet advises lifts away the oil her skin produces but her absent coat cannot absorb, and drying her fully afterwards matters more in winter, when a damp cat in a cool room chills fast. Watch for dry, flaky patches when heating runs constantly, and for any new spot, sore or colour change on sun-exposed areas; a sore that does not heal, a growing lump or repeated redness in the same place deserves a veterinary check rather than another week of watching.
Keeping the Whole Household Consistent
Hairless care fails when one person dresses her and another strips the jumper off, or when a sunny perch is moved by someone who did not know why it sat in shade. Write the household rules down where everyone can see them: which jumpers fit, where the shaded perch belongs, and how her skin should look when it is healthy. KinsLe Family Sharing puts those warmth and sun notes on her shared profile, so family and helpers work from the same seasonal instructions.