Colour temperature, and where the electricity comes from
The best LED bathroom mirrors for 2026
A lit mirror is an electrical fitting in a wet room, and two specifications describe that honestly. The first is the IP rating — the two digits that state what the enclosure resists, IP44 being the common bathroom figure — and it has to be read against the zone the mirror will hang in, which is defined by your country's wiring rules and by distance from the bath or shower. Those rules, and the manufacturer's instructions, are the authority; this site is not. The second is how it is supplied: hard-wired mirrors are an electrician's job, while plug-in and battery models are not. After the electricity, the light itself. Colour temperature in kelvin decides whether the room looks like a bathroom or a car park — 3000 K is warm, 4000 K neutral, 6500 K is the cold end — and adjustable models cover the range. Demisting is a heated pad behind the glass, and it either exists or it does not. We compare size, stated colour temperature and whether it is adjustable, IP rating, power supply, switch type, and whether demisting is fitted.