I'm actually in the process of whitening my teeth.
I'm using Colgate Platinum Daytime Professional Whitening System (
here) as recommended by my dentist (who happens to be my sister and who has also used it herself

) Basically you wear mouth trays with paste in them for one hour a day for 2 weeks, and will put you back around $200 for a pack. Which should actually last you more than 1 complete 2 week treatment.
The only problem is you need to avoid coffee, red wine and tobacco (god that's like almost all the good things

) during treatment because it'll discolor the teeth.
Most people are concerned about tooth sensitivity. At the risk of sounding like a commercial I'd reccommend GC Tooth Mousse by Recaldent (
here). My teeth were feeling a little discomfort from the whitening and I applied this once - and it went away just like that! I was pretty impressed. It even comes in different flavors; strawberry, melon, vanilla, mint and tutti frutti, haha
