| abstract |
[PROBLEMS] To provide a novel ultraviolet absorber having high water solubility, excellent absorption ability over a wide ultraviolet wavelength region, no absorption in the visible region, and high stability and safety. A benzylidene malonamide represented by the following formula (1) and a salt thereof, an ultraviolet absorber comprising the novel compound, and a skin external preparation containing the ultraviolet absorber. [Selection figure] None |