Body oils and lotions both provide hydration, but they work differently. Body oils are highly concentrated, penetrate deeply into the skin, and are excellent for locking in moisture, especially when applied to damp skin. Depending on your skin type and needs, body oils can be a more effective and nourishing choice for long-lasting hydration and a healthy glow. In addition, oils are self-preserving, meaning they are 100% pure with no added preservatives.