His concoctions are probably no longer available, but you can still buy peanut butter shampoos and conditioners hair masks and oils that you can apply and spread directly to your hair. Peanut Butter as a Leather Cleaner well, as anyone who has ever opened a jar knows, peanut butter is naturally oily. That makes it a good emollient for buffing leather, sofas and purses and other goods. You just apply a dollop of peanut butter to a soft cloth and wipe the leather in a circular motion until it shines