Almost everyone has had the experience of looking fine at home, then catching sight of themselves in a bathroom mirror somewhere else and wondering what happened. It is very rarely you. It is nearly always the light.
Bathroom lighting is the one place where the physics are unforgiving and the fix is well understood, and yet the standard installation in most homes is the exact configuration that guarantees the worst result: a single downlight directly above the mirror.
The problem with overhead light
Light from directly above a face casts shadows downward. Eye sockets go dark, the nose throws a shadow across the mouth, anything under the chin disappears, and every line on the face is exaggerated because the light is raking across it rather than filling it.
This is not a subtle effect. It is the same lighting setup used deliberately in horror films.
The fix is to bring light in from the sides at roughly face height, so it fills those shadows rather than creating them. This is why theatre dressing rooms have bulbs running down both sides of the mirror, and it has been the correct answer for about a hundred and fifty years.
The setup that actually works
Side-mounted sconces are the gold standard. A pair flanking the mirror, mounted with the centre of the fixture at roughly 60 to 66 inches (152–168 cm) from the floor — approximately eye level for most adults. Space them 36 to 40 inches apart, which for a standard vanity means just outside the mirror edges.
Choose fixtures that diffuse light outward rather than direct it up or down. Opal glass, frosted acrylic, or a shade open at both ends. A sconce that throws light only downward re-creates the original problem at a lower angle.
If side-mounting is impossible — and in a lot of bathrooms it genuinely is, because the mirror is set into a cabinet or there is no wall to either side — a horizontal fixture above the mirror is the fallback. Make it as wide as you can. A wide bar light spreads its source over 24 to 36 inches instead of concentrating it in one point, which softens the shadows considerably. Mount it about 75 to 80 inches from the floor, or 3 to 6 inches above the top of the mirror.
A linear LED bar like the Nevaeh acrylic linear vanity light is designed for this job specifically — the diffuser runs the full length, so there is no single hot point.
The best version is both. Side sconces for the face, an overhead or ceiling fixture for general room light, on separate switches. If you are renovating and can only run one new circuit, run it to the sides.
Side-mounted sconces at eye level fill the shadows that overhead light creates. This is the single biggest improvement available in a bathroom.
The number nobody checks: CRI
Colour Rendering Index measures how accurately a light source shows colour compared with natural daylight. It runs to 100, and it is the specification that decides whether your skin tone looks like your skin tone.
Cheap LEDs often sit at CRI 70 to 80. In a hallway you will never notice. At a mirror where you are applying makeup, shaving, or checking whether a spot has faded, CRI 80 means colours are being reported to you inaccurately — typically with reds under-rendered, which makes complexions look grey and washed out.
Look for CRI 90 or above for any fixture near a mirror. It is worth paying for. If a product listing does not state CRI, ask — we can look it up for anything in the range.
Colour temperature and brightness at the mirror
Vanity lighting wants to be cooler than living room lighting and warmer than an office. The range is 3000K to 4000K, and 3500K is a good default if you cannot decide. It reads as clean and neutral without being clinical.
There is a case for going to the warmer end if the bathroom doubles as a place you unwind in the evening, and a case for 4000K if the main use is getting ready in the morning. If you can, put the vanity light on a dimmer and get both.
For brightness, aim for around 1600 to 2000 lumens total at the vanity. Split between two sconces, that is roughly 800 to 1000 lumens each. The rest of the bathroom wants around 4000 lumens for a typical family bathroom, mostly from the ceiling.
Where side-mounting is impossible, a wide linear bar spreads the source and softens the shadow problem.
IP ratings, explained without the jargon
Bathrooms are wet, and fixtures are rated for how much water they can tolerate. The rating is two digits: the first is protection against solid objects, the second against water. The second digit is the one that matters here.
- IP44 — protected against splashing water from any direction. This is the minimum for anywhere near a basin or within reach of a shower spray.
- IP65 — protected against water jets. Suitable for a shower enclosure ceiling.
- IP67 and above — immersion-rated. Overkill indoors, standard for outdoor and ground-level fixtures.
Most countries define zones within a bathroom with different minimum ratings, and the specifics vary by jurisdiction. The practical version: anything within about 60 cm of a basin or bath wants IP44 or better, anything inside a shower enclosure wants IP65, and a fixture on the far wall of a large bathroom can be an ordinary indoor sconce. When in doubt, ask your electrician, because they will know the local regulation and it is not worth guessing.
Practical details that come up after installation
Mirror cabinets. If your mirror is on a hinged cabinet door, side sconces need enough clearance for the door to swing. Measure the arc before you drill.
Tile layout. Fixture positions and tile grout lines interact. If the wall is being tiled, agree the fixture centres with the tiler first — a sconce that lands awkwardly across a grout line is a permanent small annoyance.
Finish and humidity. Brass and copper develop patina faster in a bathroom than anywhere else in the house. Some people want that. If you do not, choose a lacquered or plated finish and check the product notes. Chrome and brushed nickel are the low-maintenance options.
Integrated LED versus replaceable bulb. Integrated fixtures look sleeker and are easier to seal against moisture, but when the LED array eventually fails you replace the whole fixture. Replaceable-bulb fixtures let you change colour temperature and CRI later. In a bathroom, the sealing advantage of integrated units is real, so we would lean that way here even though we would not elsewhere.
A quick summary
- Light the face from the sides at eye level, 60–66 inches from the floor.
- If you must go above the mirror, go wide rather than bright.
- CRI 90 or better. This matters more than any other specification.
- 3000K–4000K, ideally dimmable.
- IP44 minimum near water; IP65 inside a shower.
You will find dedicated mirror and vanity fixtures in the mirror lamp collection, and the wider wall lights range covers sconces suitable for the drier parts of a bathroom. All our fixtures run on universal-voltage drivers; if your electrician needs the IP rating or driver specification for a particular model before wiring, send us the link and we will confirm it in writing.