Jennifer Aniston is 46-years-old but doesn't look her age. The former “Friends” star sat down with People magazine for an exclusive interview to talk about her beauty regrets. The biggest one? Not using sunscreen as a kid.

"I gave myself a suntanning intervention a few years ago, where I was basically saying, 'Let's just quit while we're ahead,'" Aniston told People. "I was not great as a kid with sunscreen. That's one of my big regrets." The actress also talked about how she and fiancé Justin Theroux now use sunscreen every day to combat harmful ultraviolet (UV) rays from the sun, which can cause wrinkles.

However, Aniston does believe that UV rays are actually beneficial for people in the long run because the light curbs potential vitamin D deficiencies. Aniston advises everyone to stay in the sun for 20 minutes a day. “We are now having a vitamin D deficiency because of all the SPF," she added.

Aniston's latest movie “Cake” forced the actress to go without make-up and made her realize that she can live without beauty products in real life too. During the initial stages of shooting the movie, the actress was nervous to be seen by paparazzi in her natural look. But she gradually became confident. "I'm less attached to [makeup] now," she told People, adding that Theroux loves her without makeup too.

But she also loves to dressing up and going out. Aniston's favorite look is when she goes for the “smoky eye” look. The “We Are The Millers” actress takes care of her glowing complexion by drinking at least five bottles of water everyday. “Now it’s just such [a] habit," added the actress. "There are so many lazy water drinkers!”

Aniston, a brand ambassador for Aveeno, also feels that looking great and feeling good are not dependent on age. She believes that a woman can look good at any age as long as she feels great about herself within. “If society is telling you to sit it out after 40, you diminish yourself," she said. "Believe what you feel. If you feel crappy about yourself, it’s going to show."