Abstract: Broad-spectrum sunscreen refers to the simultaneous blocking of the sun's rays in the A band (UVA, 315-400nm) and B band (UVB, 280-315nm) ...
AbstractChemical sunscreens, also known as chemical ultraviolet (UV) absorbers, also known as ultraviolet absorbers and organic sunscreens, refer to organic sunscreens that can absorb harmful ultraviolet radiation.
AbstractPhysical sunscreen, also known as inorganic sunscreen, is a type of sunscreen, which is different from chemical sunscreen, and the main type is dioxide.