Coconut oil does not whiten teeth by bleaching but rather with lauric acid which helps get rid of plaque and bacteria- major contributors to yellow teeth. Coconut oil contains medium chain fatty acids with 50% being lauric acid. Lauric acid has proven anti-inflammatory and antimicrobial properties which help to get rid of plaque and bacterial on the teeth and gums. It also helps to keep your breath fresh.
Mix 2 tablespoons each of coconut oil and baking soda in a small container to form a paste.Add 10 drops of peppermint oil and mix (this improves on the taste and smell) use any edible essential oil or spearmint.Use this as your daily toothpaste to whiten teeth and for fresh breath