Charm your mom by letting her in on one of the best kept beauty secrets - a beautiful, age-defying smile that keeps people guessing about her age - all for a good cause. Celebrity mother and star of the hit show Las Vegas, Vanessa Marcil and Crest Whitestrips Renewal are teaming up to celebrate motherhood and help brighten their special day.

For every UPC code entered through the end of the month, Crest Whitestrips Renewal will then make a donation to Sojourn Services for women and children. Twenty winners will receive a Helen Ficalora necklace as a special gift for their mothers.

"I'm thrilled to share my greatest, age-defying beauty secret with moms everywhere and make mothers smile this Mother's Day while supporting my favorite charity," said Vanessa Marcil.

As a busy, working mother of four-year-old son, Vanessa Marcil always looks her best - with the help of new Crest Whitestrips Renewal - on and off camera. Crest Whitestrips Renewal, which was introduced earlier this year, is an easy and affordable age-defying solution for your smile that fits easily into any active lifestyle.

After just ten days, you can remove up to twenty years of stains from your smile.

For the chance to win a gorgeous Helen Ficalora necklace with smile and mom charms as a special gift for your mother, log on to enter your Crest Whitestrips Renewal UPC code.

Keep mom's smiling this Mother's Day - a beautiful white smile paired with a gorgeous gold charm necklace.