Calpol vapour plug nightlight refill pads is a soothing vapour plug and nightlight that lasts for up to 8 hours it is the first ever vapour plug with nightlight to give night time comfort to your child and is safe to use from 3 months of age just pop it into a socket in your childs bedroom and then leave the gentle reassuring glow and essential oils of lavender and chamomile to work their sleepy magic