Most conventional baby oils are mineral oil, a petroleum derivative that coats the skin without absorbing. The Purely Tallow Lanolin Baby Oil uses lanolin oil and grass-fed beef tallow, added directly to warm bath water so the oils disperse and lightly coat the skin during the bath itself. By the time your baby is dry, a buttery layer of biocompatible moisture is already absorbed and working. No synthetic fragrance, no mineral oil, no petroleum derivatives. Just two clean ingredients in a glass pump bottle designed for the most sensitive skin in the house.