Left untreated, a cleft lip dooms a child to a lifetime of emotional and physical difficulties. It’s a also relatively easy condition to fix, and the organization Operation Smile has made it their mission to provide free surgery to needy children around the world who suffer from cleft lip and other facial deformities.

In this heartwarming video you can see a young Brazilian girl’s shocked and overjoyed first reaction to her new face after getting cleft lip surgery. You might want to grab a box of tissues before watching. (And you can donate to Operation Smile here.)

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