Does anyone have any suggestions for At-Home Tooth Whitening that works? I have used things in the past, but I've found that they cause my teeth to become really sensitive, so I'm just hesitant to try something again. I've see whitening things you can make yourself on Pinterest. So I'm open to any suggestions! I don't have major stains, just want a nice smile on my wedding day. Also, how far in advance should I start? My wedding is four months away.