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InteriorBathroom RemodelingBathroom Lighting & Ventilation October 15, 2025 7 min read

Get Vanity Lighting Right: Height, Cross-Light, and CRI

One ceiling fixture behind your head is why every mirror in the house tells a different story. Lighting the face from both sides at eye level — with honest bulbs — is a one-afternoon fix.

Bathroom vanity mirror flanked by two vertical sconces casting even light, with tools on the counter below

Stand at your bathroom mirror under a single overhead fixture and you are being lit like an interrogation subject: light rakes down, eye sockets and the underside of the nose go dark, and every shave or makeup decision is made against shadows that will not exist anywhere else in your day. The fix is not a brighter bulb. It is geometry.

Light the face, not the room

Makeup artists light faces from both sides at eye level so the light fills evenly and shadows cancel. A bathroom does the same thing with two sconces flanking the mirror — or, second-best, one horizontal bar mounted above it. Overhead cans are for the shower and the floor, never the primary light on a face.

Set the heights before anything else

Sconce centers belong at 60 to 66 inches off the floor — eye level for most adults — spaced 36 to 40 inches apart, which usually means just off each edge of the mirror. A bar fixture goes 75 to 80 inches to its center, tight above the mirror. Mark both options on the wall in tape and stand at the sink before you commit.

Kill the power and open the wall you need

Breaker off, dead-circuit confirmed with the tester at the old fixture. If the existing box sits where a new fixture can use it, this is a swap. If you are moving from one center light to two side sconces, you will fish cable from the existing box to two old-work boxes — an honest afternoon with a drywall saw and a fish tape, all of it hidden behind the mirror zone.

Buy bulbs by two numbers

Color temperature 2700K to 3000K — warm enough to be kind, cool enough to be accurate. CRI 90 or above, because low-CRI LEDs dull reds and make skin look gray, which is exactly where cheap bulbs cheat. Total output around 1,500 to 1,800 lumens across the vanity is plenty.

Wire the fixtures and level them twice

Hot to hot, neutral to neutral, ground to the strap. Vertical sconces telegraph the tiniest lean — level each backplate before tightening, then level the pair against each other with a straightedge across both centers.

Put it all on a dimmer

Full brightness for grooming, twenty percent at 2 a.m. — one LED-rated dimmer covers both lives. Match the dimmer to your bulbs (most name-brand LEDs list compatible dimmers) or you will trade shadows for flicker.

Watch out

Bathrooms have wet-location rules: any fixture over a tub or inside a shower zone must be wet- or damp-rated, and new boxes must be fished without nicking the cables that already crowd vanity walls. If the wiring in the wall is aluminum, cloth-wrapped, or ungrounded, close it up and call an electrician — that is a bigger project than lighting.

Nobody looks bad in a mirror lit from both sides. That’s the whole trick.

The five-year view

Good LED sconces are a decade-long install — no bulb church to attend. Wipe the diffusers when you clean the mirror, and if a lamp ever fails early, replace both sides at once so the color stays matched. The upgrade survives every future paint color and vanity swap, because faces do not change their geometry.

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