crest white strips work but i'm not sure the current ones are good though. You can do the five minute ones but thats a lot of money and results are slow too. It does save u the whole teeth sensitivity phase. I use to use the 30 minute strips from like 2006? It worked really well. My teeth stayed pearly white for more than 4 years
Use a baking soda based toothpaste and rinse with food grade hydrogen peroxide. It will eliminate cavities and whiten your teeth. That is what famous people do os go to the dentist and pay high dollar to have their teeth bleached or have a dental peroxide treatment. This is healthier and not as costly. Hope it helps!