Provided is a technique for washing a body fluid, a foreign body or excrement in a living body rapidly and cleanly without damaging biological tissues. A second spectral coating that passes the longer wavelength band and blocks the shorter wavelength band is on an outer annulus region, but not on an inner region on the first surface or a second surface of the substrate. At least one of the first and second visible reflection bands is a first-order reflection. insulin sensitizing or inhibiting properties of drug candidate substances, e. A method for releasing an animal harness from a vehicle is also described.