How should I dispose of partially-used hair spray?

Partially-used aerosol products thrown out with household rubbish may rupture and cause a fire during rubbish collection or processing, and should be disposed of only when used up completely. If you want to throw away a partially used aerosol product, take it outside away from any naked flames and hold down the nozzle releasing the product until the sound stops. This releases all the gas, so you can dispose of according to local guidelines.

*If your aerosol product has a mechanism to release all remaining gas, use this mechanism just in case, even if you think you have used up all of the product, then dispose of according to local guidelines.