Colgate-Palmolive on Monday announced the launch of Colgate Zero products, which appear to be aimed at the same younger, more health- and eco-conscious crowd that buys from niche, smaller competitors like Dr. Bronner’s. It could also help Colgate better compete with Procter & Gamble, the maker of Crest oral hygiene products, which is also Colgate’s largest competitor. P&G owns natural brands Burt’s Bees Purely White and Native Toothpaste.