Sunscreens are designed to protect against sunburn, photoaging, and tanning through inorganic and organic active ingredients. Specifically, UV blocking sunscreen generally refers to physical sunscreen ingredients, can be irradiated to the human body UV reflection out, the main components are zinc oxide, titanium dioxide and so on.
Sunscreen particles are used to form a protective layer on the skin surface to reflect the light waves that may cause damage to the skin in ultraviolet rays, so as to protect the skin. Particles of physical sunscreen generally stay on the skin surface and will not be absorbed by the skin, so the burden on the skin is relatively small, and it is not easy to cause skin sensitivity.
Through the combination of certain chemicals and cells, before the cells are damaged, the first UV may harm the skin to absorb the part, so as to achieve the purpose of sunscreen.
Sunscreen is an ingredient used in sunscreens and skin care products to protect the skin from sun damage. Sunscreen reduces the risk of skin cancer by protecting your skin from UVA and UVB damage. They prevent skin reactions and sunburn. They prevent UVA from penetrating deep into the skin, which in turn prevents premature skin aging.
Any active ingredient must be approved by a professional body before it can be used in sunscreen. To date, the Food and Drug Administration has approved 17 ingredients for sunscreens, including oxybenzone, titanium dioxide and zinc oxide.