WORLD class skincare doesn't have to be inaccessible. Actress Sophia Bush has revealed that she buys French retinol for anti-aging — in bulk. Even if you don't live in France, you can find the beauty product online at Walmart, for just $15.

Sophia, who attended the Olympic Games in Paris, made sure to get her fill of fun and self-care with a stop at French beauty stores. She shared a photo of her bag filled to the brim with A313's Vitamin A Pommade, available at French pharmacies. The Pommade boasts the star ingredient retinol, which is renowned in the skincare industry for its anti-aging benefits.

Read More on Beauty According to Harvard Health , the topical form of vitamin A help "reduce fine lines and wrinkles by increasing the production of collagen." "They also stimulate the production of new blood vessels in the skin, which improves skin color," the site explained. "Additional benefits include fading age spots and softening rough patches of skin.

"However, it takes three to six months of regular use before improvements in wrinkles are apparent—and the best results take six to 12 months." Most read in Hair & Beauty A313's highly concentrated formula is what helps the product truly stand out. While most retinols available on the market come in 0.

1 percent concentrations, A313 contains three types of retinol and is the preferred retinol of celebrities like Sienna Miller. In an interview with Harper's Bazaar , Sienna explained that actress Alexa Chung put her onto the p.