I've asked Sean and this is what he says:
Work out what the main risk will be in the salon - you're not going to be cooking chips in there (are you??) and (hopefully) people won't be smoking in there, so your main risk will probably be from an electrical source. As Babs mentioned, co2 is the best thing for this - also its a clear, odourless (for the most part) gas that won't damage any of your appliances or rooms. It does come out pretty fast and furious (loud) though so best to be prepared for that!
Powder is good for most fires, (but if using for a chip pan fire - do not direct it into the Pan itself!) BUT it will destroy everything in the surrounding area and it's almost impossible to breathe when it is operated in a confined space - VERY, VERY MESSY! If you use it in your kitchen then the whole room will be destroyed, it will get into cupboards and all sorts of places - but it does do a good job, just be prepared for the mess if you have to use one - we have a powder one in our kitchen and I'm under instructions never to use it unless the house is burning down around my ears!!!

Sean has even considered welding the safety pin into place to stop me from using it in a panic!!!


HTH
Jackie