Sunscreen cosmetics show UV-protection function by the application of organic UV absorbers and/or inorganic UV scattering agents. In 2012, the expression of UVA protection efficacy was amended from three grades (PA+ ∼ PA+++) to four grades (PA+ ∼ PA++++). In accordance with this revision, cosmetic manufacturers have directed their efforts toward the development of sunscreens with strong UVA protection. In our company, a broad-spectrum sunscreen product, BSUS Milk-1, which shows a strong UVA protection efficacy by the composition of four kinds of UV absorbers and one UV scattering agent, has developed. BSUS Milk-1 was tested on 39 patients with photosensitive dermatoses at six university hospitals. The results demonstrated that BSUS Milk-1 is highly useful, especially for UVA-sensitive patients.