A serum or a cream? Is it important?

The answer to the question: not really. What matters is the ingredient list and the formulator may have to change the consistency of the product to¬† make sure that the actives are dissolved completely. From my book Types of skin care products Cream: an emulsion of oil and water in approximately equal proportions that penetrates well the outer layer of skin. Both oil soluble and water soluble actives can be used. Creams have a higher viscosity (thickness) than lotions. Lotion: a low viscosity topical preparation. Gel: a jelly-like material that can have properties ranging from soft and weak to hard and tough. By weight, gels are mostly liquid, yet they … Continue reading A serum or a cream? Is it important?