Titanium dioxide also holds the key to what makes certain foods look so bright and appealing on the shelf. Research shows that shoppers are more likely to buy and enjoy foods that have vibrant colors, which is why titanium dioxide has become an increasingly popular enhancer. According to the US Department of Agriculture, one can find this ingredient in around 13,000 brand-name food products in the United States, including candies, coffee creamers, soups, pastries, and salad dressings.