I'm going to have a little money coming to me, and I was going to spend a little on myself before putting the rest aside for bills. This illness has taken so much from me. I used to always have my hair done, makeup on, dressed fashionably...and now I feel like a frump. So, I want to do something to make me feel better. I don't really know anything about these products aside from what I've read online and wanted your input. I was thinking about this (below) for teeth whitening, but am concerned that it might cause sensitivity. Anyone have experience with it? Or others? And, I've developed skin darkening (age spots? sun damage?) on my face that I absolutely hate. I also have cystic acne that has left scars and discoloration. I know nothing about skin bleaching products. Thoughts? TIA.