Halogen bulbs are a form of energy efficient lighting that use around 25 per cent less energy than traditional incandescent bulbs.
Like traditional bulbs, Halogen bulbs use a tungsten filament, but they use a halogen gas inside the bulb rather than argon or nitrogen, making the filament last longer.
Around half the size of traditional bulbs, they are most commonly used in fixed ceiling down-lighters.
It is expected that some lower-efficiency Halogen bulbs will be banned alongside incandescent bulbs under upcoming EU regulations, though the sale of higher efficiency models will still be permitted.
UN confirms 87 of the world's largest companies have committed to emissions targets in line with 1.5C warming trajectory
Lower emissions from the health service will not only benefit the climate but also offer greater therapeutic value to patients and help to aid recovery, Labour says
A round up of green business news from around the world
'We have to repurpose capitalism': Meet the radical green business group inspired by XR and the climate strikes
Business Declares initiative launches in support of Global Strike, as millions around the world take to streets to demand climate action