bulb

At home he shares one light bulb between the two rooms that make up the small house.

One of the most multifaceted ingredients, it's a multi-layered bulb around a dense core with sprouting stalks and frilly fronds.

The main differences between medical devices and High Street masks are the strength of the LEDs, the number of bulbs on the device and how close they sit to the skin's surface when being used.

They had to constantly clean the house and change every light bulb in the home to bright white for filming purposes, she said.

"Now we've got a little pen torch, just in case, whereas the old pitmen's lamps used to have a little bulb, but if your battery fused you were up the creek really."