Lights behind a mirror create a soft halo by illuminating the wall around the glass. You can achieve it with a compatible retrofit lighting system or choose a purpose-built backlit mirror with integrated controls. For a bathroom, plan the complete installation rather than adding a strip solely because it is described as waterproof.
A halo makes the mirror feel lighter on the wall and gives the room a welcoming glow. If you also want clear lighting for makeup or shaving, consider front lighting or a dual-light mirror: backlighting and face lighting do different jobs. Browse ready-made backlit bathroom mirrors for the finished effect.
Check whether your existing mirror suits a retrofit
Look at how the mirror is mounted and whether there is room behind it for lighting and its specified components. A mirror fixed flush to the wall may not leave a useful path for a halo. Do not remove heavy glass or alter a powered mirror’s backing simply to create a gap.
The lighting system needs a suitable mounting surface, compatible power supply and control, a planned cable route and the clearances specified by its manufacturer. For curves or corners, use a system designed for that shape; do not force a strip around a bend it cannot take.
Plan the look before the installation
- Leave visible wall around the mirror so the halo has somewhere to appear.
- Consider the wall colour and texture: a pale smooth surface reflects differently from dark or heavily textured tiles.
- Decide whether you want a warm evening glow, a cooler tone or selectable colour temperatures.
- Check whether existing vanity lights already provide the face lighting you need.
- Plan access to the driver and controls instead of sealing everything behind the mirror.
A tidy result comes from the whole arrangement, not simply hiding every cable. In a bathroom, ask a registered electrician to assess the connection and position. Electrical Safety First advises using a registered electrician for bathroom electrical work. The strip’s water-resistance rating alone does not cover the driver, connections and installation.
Three ready-made ways to get the glow
60 × 80 cm rectangular backlit mirror — £139. A clean outline with a soft rear glow, three light colours, dimming, memory and anti-fog. Choose it when the room already has useful face lighting and you want the mirror to add atmosphere.
50 × 80 cm long oval backlit mirror — £99. Curved ends soften the lines of cabinetry and tiles. Rear lighting, three colour modes and memory give you an inviting effect, with anti-fog for everyday bathroom convenience.
60 × 80 cm dual-light mirror — £129. Choose this when a halo alone will not cover your routine. Front lighting brings illumination towards the reflection while the rear lighting adds depth around the glass. Dimming and anti-fog complete a flexible vanity upgrade.
Prices and stock checked on 27 October 2026. Listed prices are before any checkout promotion.
Avoid the common retrofit disappointments
Visible LED dots, dark corners and a patchy halo often come from the placement and wall gap rather than the colour setting. Choose the mounting and diffusion method specified for the lighting system. Do not keep moving adhesive tape around until it loses its grip or cover ventilation openings to conceal a bright spot.
Another disappointment is expecting a rear halo to replace all bathroom lighting. Check how your face looks at the basin, especially around the eyes and under the chin. If shadows remain, improve task lighting or choose a front-and-back-lit mirror rather than simply seeking a brighter decorative glow.
Care for the mirror and lighting
Keep the surface and edges clean using a soft cloth and the care instructions for the mirror. Avoid spraying cleaner into controls, cable openings or the rear lighting. Our bathroom mirror cleaning guide covers the everyday routine.
Before buying, read what to look for in an LED bathroom mirror and where to buy an LED mirror in the UK. Choose the effect you want, the size that suits the wall and features you will actually use.
Backlighting questions
Can any mirror have LED lights added behind it?
Not every mirror has suitable mounting space or a backing that can accept a retrofit. Check the complete arrangement before choosing a lighting kit.
Does three-colour lighting mean RGB?
No. Three light colours usually refers to warm, neutral and cool white tones. Coloured RGB lighting is a separate feature and must be specified for the model.
Bring a softer glow to your bathroom. Explore LED Mirror World for illuminated designs that combine a finished look with a reflection you will enjoy every day.