Urgent help needed, where do I buy a new gas canister for Bruan smooth Sytler???

[newstart2010]

I wanted to to do my hair right now, where can I buy a new gas canister?

I bought the styler second hand and only used it once. I'm sure the gas was full when I bought it, so am I doing something wrong if it was used up in only one go???

Where can I buy a replacement canister? And how much will it be?

When I used to work in the local chemist we used to stock these. But that was a million years ago, might be worth checking though.

i have found that they sell them in superdrug and boots.

now i just need to know what i did wrong so I do not waste it again.