What is the difference between serums and lotions?
A serum is more concentrated (more active ingredients than lotions or creams) and can be also more liquid (lighter in weight) than lotion. In general, creams are made by combining an oil of some type with water and are best suited for normal to dry skin types. Serums, on the other hand, are thicker liquids and are usually clear in color. Being water-based, they are more quickly absorbed into the skin and can be layered under other products.
