Hi Rachel, you are in luck if you are after a caucasian hairdresser as I can offer you my services. I'm an aussie hairdresser with over 20yrs experience having worked in the UK as well as Australia. I have set up my own business here from home which is not far from where you are situated and service mainly the expat community.
I know the difficulty in finding someone to do caucasian hair here in singpore as it seems to be one of the things that most of us expat women moan about ( plus having experienced a few shocking haircuts here myself
) its what prompted me to start up a salon especially for expat women.
I'm conveniently located at the "Duchess Crest" (you can view this on the property
pictures section of Singapore Expats site) in Duchess Avenue behind the rather large Chinese Boys High School on Bukit Timah Road. My hand phone number is 8157 4140 I'm available by apppointment and can accomodate you in cutting and colouring so why dont you give me call !