Jennifer Aniston's Hair Is Living Proof of Perfection!

Jennifer Aniston dons a black little dress while visiting Living Proof Style|Lab on Friday (May 9) in Boston, Mass.

Earlier in the week, the 45-year-old actress was casual and comfy while walking on the set of her new film Cake, which is currently shooting in L.A.

PHOTOS: Check out the latest pics of Jennifer Aniston

“It’s a wonderful product line that I believe in and which makes a difference to so many people – it lives up to its name. And it’s fun to be involved creatively from concept to execution, sharing my ideas. After spending 25-plus years in makeup and hair, you learn what works and what doesn’t work, what damages your hair – what you have to mix five products together to achieve. And [in my Living Proof] role I have all these men in white lab coats where I can throw out ideas,” Jennifer recently shared to WWD about Living Proof.