The actress and model was chosen as the new face of Garnier, reports Coco Perez.
Moynahan is following in the footsteps of Sarah Jessica Parker and Alana De La Garza, who are also ambassadors for the brand.
Garnier president David Greenberg stated, "Her class, grace and accessibility make her a model representative of the Garnier brand. Most importantly, she exhibits a likable, healthy beauty that speaks to our consumer in such a positive way."
Moynahan has a child with football player Tom Brady. The single mother will be featured in a new TV and photo ad campaign for the Garnier Ultra Life collection to be launched in July.