Julia Roberts‘ beautiful smile maintains its trademark sparkle thanks to a tip the actress received from her grandfather. The mother of three with husband Danny Moder, pictured here vacationing in Hawaii last month, recently shared her very minimal beauty routine.

‘I brush [my teeth] with baking soda,” the actress confided to InStyle magazine. “My grandfather would put a big heaping mound of it on his toothbrush. He had only one cavity in his entire life.”

Julia Roberts went on to say of her hurry up and go skincare approach, “Sometimes that’s all I do as far as a regimen goes. Look, I’m happy if I have on moisturiser and ChapStick! When you’re dressing three people besides yourself, something has to fall away.”

One last tip? The 44-year-old added, “I’ve learned to always have a big pair of dark sunglasses within arm’s reach before going out.”

photo: FameFlynet