Let me start!
I am actually OK with my set of teeth but however I saw quite alot of ads on these two brands and would love to try if it works. I only have 1-2 teeth hiding and the rest is good. I have a friend in Hong Kong who have tried Zenyum Whitening and the results delivered and her teeth got brighter. No idea on the invisalign treatment. Just wondering whether are the results guaranteed at the end? I understand that after obtaining the results, you will have to wear a retainer often to retain the results.

Would appreciate if anyone who have tried Zenyum or Become invisalign treatment to share their story here.