Hi Rachel
You can get it from Professional Hair Products in Central.
http://maps.google.com/maps?q=Stanley+St,+Hong+Kong&hl=en&ll=22.282346,114.155073&spn=0.007039,0.009645&sll=1.283931,103.851461&sspn=0.01521,0.01929&vpsrc=6&t=m&z=17&layer=c&cbll=22.282439,114.154996&panoid=q9c3Psv_xlpnCfNsYmGgLw&cbp=12,75.44,,0,2.8
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