Since it was approved by the FDA for cosmetic use in 2002, Botox has become the go-to injectable treatment for combating wrinkles and fine lines. But lately, it’s also gaining popularity through a subtle procedure in the lip augmentation family: the Botox lip flip.

As Lara Devgan, a top board-certified cosmetic surgeon in New York City, explains it, lip flips are a procedure in which neuromodulators (usually Botox) are injected in infinitesimal quantities at the corners of the mouth and near the Cupid’s bow.