People have been told not to leave hand gel in their cars during the hot weather because they risk causing fires.
The UK is going to experience a mini-heatwave this week, with temperatures reaching as high as 31C in some areas.
NHS property services, which manages hospitals in the UK, has issued a warning to NHS stafff about leaving hand sanitiser in their cars.
The NHS bosses say they have been informed that the hand gel could be flammable, the Manchester Evening News has reported.
A statement from NHS Property Services reads: "At the end of May, NHS Property Services (NHSPS) received notifications from safety officers at Unison, who raised media reports from US Fire Authorities that hand sanitisers were catching fire in vehicles.
"As part of our COVID-19 strategic pandemic plans, NHSPS has acquired significant levels of hand sanitisers to keep our frontline engineers safe.
"At NHSPS we take our duty of care toward our frontline staff very seriously. As such, in response to the notification we received, our health and safety team issued an internal message to highlight the potential risks associated with hand sanitisers in vehicles. With the hot summer approaching, there was concern for our facilities management staff who would be transporting this material.
"This decision to raise awareness across colleagues was made in good faith. It is now our understanding that the risks associated with hand sanitisers in vehicles only become apparent when in contact with a spark. We will be issuing a formal alert to our frontline teams to clarify this situation."
But the NHS organisation was keen to stress to colleagues that they should still use the sanitiser when they cannot access soap and water.
"Hand hygiene is one of the most effective methods to stop the spread of COVID-19 following indirect contact," a statement said.
The NHS body issued the alert to colleagues, along with a picture of the inside of a vehicle with the car's passenger door heavily damaged.
