Patent ID: 8658630

Claim:
An allergen reducing method comprising spraying into the air an allergen-reducing agent comprising water and a water-soluble polymer compound having units having hydroxy or carboxy groups wherein at least a part of the hydrogen atoms of the hydroxy or carboxy groups are substituted by groups represented by the following formula (1): —R 1a —(OR 1b ) p -A-R 1c (1) wherein R 1a is a group selected from the group consisting of an ethylene group, a propylene group, a trimethylene group, a 2-hydroxytrimethylene group, a 1-hydroxytrimethylene group, a 1-oxoethylene group, a 1-oxotrimethylene group and a 1-methyl-2-oxoethylene group, R 1b is a group selected from the group consisting of an ethylene group and a propylene group, R 1c is a group selected from the group consisting of a C5 to C25 alkyl group which may be substituted with a hydroxy group, A is —O—, p is a number of from 10 to 40 as the average number of moles added, and the groups (OR 1b ) may be the same or different, wherein the air contains an allergen, wherein the water-soluble polymer compound is selected from the group consisting of hydroxyethyl cellulose, methyl cellulose, ethyl cellulose and hydroxypropyl cellulose.