Bathroom lighting is the worst in most homes, and there’s a specific reason: a single fixture directly overhead casts shadows straight down. Under the eyes, under the nose, under the chin.
That’s why you look tired in your bathroom mirror and fine everywhere else. It’s fixable.
The problem with overhead-only
Light from above creates downward shadows on a face. It’s the lighting used in horror films for exactly this reason.
For grooming — shaving, makeup, skincare — you need light coming at your face from the front and sides, at roughly eye level.
The fix: sconces beside the mirror
Two sconces, one on each side of the mirror, at 60–66 inches from the floor.
That’s roughly eye level for most adults. Light arrives from both sides, shadows cancel out, and your face is evenly lit.
Spacing: about 36–40 inches apart, or roughly 3–4 inches out from each side of the mirror.
This single change transforms a bathroom more than any other lighting decision.
If sconces aren’t possible
A vanity light bar above the mirror — better than a ceiling fixture, still casts some downward shadow. Mount it about 75–80 inches from the floor, and choose one with a diffused or frosted shade rather than exposed bulbs.
A backlit or LED mirror — light emanates from around the mirror itself. Excellent and increasingly affordable.
A lamp on the vanity — if there’s a socket, even a small lamp beside the mirror helps considerably.
Bulb temperature: 2700–3000K
2700K — warm, cosy, flattering. Best for a bathroom used mainly for baths and evenings.
3000K — slightly crisper, still warm. The best all-rounder for a bathroom where you also do makeup.
Avoid 4000K and above. Cool white and daylight bulbs make skin look grey and tiles look clinical. They’re the second reason bathrooms feel unflattering.
CRI — the specification nobody mentions
Colour Rendering Index measures how accurately a light shows true colours. It runs 0–100.
Look for CRI 90 or above for a bathroom mirror. Below 80 and colours shift — which matters if you’re matching makeup or checking whether something on your skin looks normal.
It’s printed on the bulb packaging. Most cheap LEDs are CRI 80; the 90+ ones cost slightly more and are worth it at a mirror.
Layer the lighting
Three layers, like any well-lit room:
Ambient — the ceiling fixture, for general light. Put it on a dimmer.
Task — the sconces or mirror light, for grooming.
Accent — a shower light, a niche strip light, or a small night light. Optional but it’s what makes a bathroom feel considered.
Dimmers
Worth it in a bathroom more than most rooms, because you use it at very different times.
Full brightness at 7am. Ten percent for a bath at 10pm, or for the 3am trip that shouldn’t wake you fully.
Safety and zones
Bathroom electrics are regulated because water and electricity don’t mix. Fixtures are rated by IP rating according to how close they are to water.
General guidance:
- Inside the bath or shower — needs a high IP-rated fixture (typically IP65), low voltage
- Immediately around the bath or shower — IP44 minimum
- Elsewhere in the room — standard fittings usually fine, though splash zones vary
Rules differ significantly by country. Check your local electrical regulations, and use a qualified electrician for any new bathroom wiring. This isn’t a DIY area.
Natural light
If the bathroom has a window, keep it usable.
- Frosted or reeded glass for privacy without blocking light
- A café curtain covering only the lower half
- A top-down bottom-up blind
- A window film — cheap, removable, effective
A bathroom with natural light needs far less from its fixtures.
Small bathroom lighting
- A mirror opposite or adjacent to the light source, doubling it
- Light-coloured tile and grout reflect more
- Recessed spots rather than a hanging fixture in a low-ceilinged room
- A strip light in a shower niche — small detail, looks expensive
Night lighting
A motion-sensor night light at floor level, or a dim strip under the vanity.
Enough to see by at 3am without the full ceiling light waking you up. One of those small additions people rarely think of and always appreciate.
Common mistakes
- Ceiling light only
- Cool white bulbs
- Low CRI bulbs at the mirror
- Exposed bulbs at eye level — glare
- No dimmer
- A vanity light mounted too high
- Fixtures without the right IP rating near water
The specs:
| Element | Spec |
|---|---|
| Sconce height | 60–66 inches |
| Sconce spacing | 36–40 inches apart |
| Vanity bar height | 75–80 inches |
| Bulb temperature | 2700–3000K |
| CRI at the mirror | 90+ |
| Light layers | 3 (ambient, task, accent) |
| Near water | Check local IP rating rules |
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