Q. Hi Mark, I have used the home whitening kits purchased from a company in China, and I have been thoroughly happy with the results. However, whenever I read up on the internet for instance on the British Health Foundation pages on the issue, it states that basically unless your dentist has advised you on the treatment you should not have it. It also states that home kits purchased from companies whom are not listed as professional are not suitable. Please advise, as there are many websites selling the kits now.,