Our Skin Research SPF 30 helps to protect the skin from harmful UV Rays as well as provide a nourishing base for supple and soft skin through the use of sweet almond oil. We combine both mineral filters and chemical filters in our formula, this combination aids to protect against the broad solar spectrum. This combination not only protects against UVB radiation that causes us to burn, but also against the entire ultraviolet spectrum, against visible light including blue light and against infrared light. All of which can causing premature aging of the skin, erythema and even skin cancer.