If you have forgotten to smile or want to make your smile more perfect and beautiful than before, then switch over to these grandma's looking dentures. The manufactures claim that by regularly exercising your mouth muscles with this thing 4 times a day for 3 minutes at a time, you can work your way towards a more beautiful smile.

It comes in three colors and resistances: normal (for men), soft (for women), and rehabilitation (for seniors and children). It's called Yumi, and it costs $50. Can also be used in conjunction with the rubber smile gadget.

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