Bathroom Vanity Lighting: How to Choose the Right Size, Height and Placement

Bathroom lighting has one job that other rooms don't: showing your face accurately. Get it wrong and the room can still look fine while every mirror check leaves you second-guessing how you actually look.

That makes vanity lighting a slightly different decision from a pendant or a chandelier. The question isn't just "what style do I like?" It's "where is the light actually going to fall, relative to my face and the mirror?"

This guide covers sizing, placement, mounting height and colour temperature, plus several options from the Lumix bathroom wall & vanity lighting collection.

What to Check Before Buying a Vanity Light

Before choosing a style, it helps to know a few things about your own bathroom:

• Mirror width: measure it before you shop, this drives almost every other decision below.
• Space either side of the mirror: this determines whether two separate fixtures will actually fit.
• Distance from water sources: a fixture mounted directly above a basin sits closer to splash exposure than one mounted well clear of it.
• Existing wiring points: know where your current fixture is wired in, since moving that point usually means an electrician.
• Colour temperature preference: warmer or more neutral light changes how your skin tone and makeup read in the mirror.

One Fixture Above the Mirror, or Two on Either Side?

One Fixture, Centred Above the Mirror

A single linear bar or bar-style fixture centred above the mirror is the simplest approach and works well on narrower mirrors or where wall space either side is limited. Light falls downward across the face, which is generally more even than a single overhead ceiling light alone.

Two Fixtures, One on Each Side

Wall lights mounted at roughly eye level on either side of the mirror light the face from both sides, which reduces the shadows a single overhead source can create under the eyes, nose and chin. This generally needs a wider mirror with enough clear wall on both sides to mount a fixture without crowding the frame.

What Size Vanity Light Do You Need?

A vanity light that's noticeably narrower or wider than the mirror it sits above or beside can look like an afterthought rather than a considered part of the room.

For a Single Fixture Above the Mirror

Aim for a fixture that reads as roughly proportional to the mirror's width, generally somewhat narrower than the mirror itself rather than wider than it.

For Two Fixtures Either Side

Each fixture should feel balanced against the width of the mirror between them, not so slim that it disappears against the wall, and not so wide that the pair overwhelms the mirror itself.

For a Double Vanity

Wider double-basin vanities often suit either one longer bar-style fixture spanning both mirrors, or a matching pair repeated over each mirror, so the layout reads as intentional rather than split down the middle.

Mounting Height and Placement

Placement matters more in a bathroom than almost anywhere else in the house, because the light needs to land on a face, not just the room.

Fixture Mounted Above the Mirror

Mount the fixture so the light source sits close to face height when you're standing at the vanity, rather than high above the mirror where it casts light down from too steep an angle and creates shadows under the brow and nose.

Fixtures Mounted Either Side of the Mirror

Position each fixture at roughly eye level, so light falls across the face from the sides rather than only from above. This is the placement most likely to reduce harsh shadowing during makeup application or shaving.

Choosing a Colour Temperature

Colour temperature changes how accurately the mirror reflects your actual skin tone and how the room feels day to day.

• Warm white (around 2700–3000K): a softer, more residential feel, closer to how most people are used to seeing their bathroom lit.
• Neutral to cool white (around 4000K and above): a crisper, more accurate rendering of colour and detail, which some people prefer for tasks like makeup application or grooming.
• Adjustable or dual colour temperature fixtures: let you switch between options rather than committing to one at installation, useful if you're not sure which you'll prefer once it's in place.

Vanity Lighting Ideas

These examples from the Lumix bathroom wall & vanity lighting collection illustrate a few different approaches to single-fixture and side-mounted vanity lighting.

Common Vanity Lighting Mistakes

• Mounting the fixture too high above the mirror. Light cast down from well above eye level creates shadows under the brow, nose and chin instead of lighting the face evenly.
• Relying on a single ceiling light alone. An overhead-only source tends to create harsh downward shadows on the face, which a dedicated vanity fixture is specifically meant to soften.
• Choosing a fixture that's too narrow for a wide mirror, or too wide for a narrow one. Measure the mirror before choosing the fixture, not after.
• Ignoring colour temperature. A fixture that's too cool or too warm can make the mirror reflection look noticeably different from how you actually look in daylight.
• Placing two fixtures too close to the mirror's edges. Leave enough clearance that the fixtures don't crowd the frame or clash with the mirror's own hardware.
• Skipping the licensed electrician. Bathroom fixtures involve proximity to water and existing wiring. We recommend installation by a licensed electrician in accordance with applicable local requirements.

Frequently Asked Questions About Vanity Lighting

Final tip: measure your mirror and note your eye line at the vanity before you shop. Once you know those two things, choosing between one fixture or two, and the right size and height, becomes far more straightforward.