Donald Trump wants to change the rules around showerheads to keep his hair ''perfect''.

Donald Trump

Donald Trump

The US government has proposed changes to increase the amount of water that can pass through showerheads to preserve his famous locks.

Trump previously complained: ''You take a shower, the water doesn't come out. You want to wash your hands, the water doesn't come out. So what do you do? You just stand there longer or you take a shower longer?

''Because my hair - I don't know about you, but it has to be perfect. Perfect.''

Trump's proposals could mean between 10 and 15 gallons of water flowing through showerheads per minute, although it has been described as ''frankly silly'' by conservation groups.