An aerosol product for forming a cooling gel composition for the human body, comprising: a double-structure container including a propellant filling space and two independent liquid concentrate filling spaces and having a discharging mechanism for simultaneously discharging contents filled in the two liquid concentrate filling spaces, wherein the propellant filling space in the double-structure container is filled with a propellant composed of a compressed gas, a first liquid concentrate filling space in the double-structure container is filled with a first liquid concentrate composition, and a second liquid concentrate filling space in the double-structure container is filled with a second liquid concentrate composition, the first liquid concentrate composition contains a hydrated endothermic substance dispersed in a liquid medium composed of a solvent containing a viscosity modifier, wherein the viscosity modifier is present in an amount of 0.05% to 10% by mass of the first liquid concentrate composition and wherein the first liquid composition has a viscosity of 1,000 to 125,000 mPa·s at a temperature of 20°C determined using a B-type rotary viscometer after 1 minute, wherein the hydrated endothermic substance contained in the first liquid concentrate composition is at least one selected from the group consisting of xylitol, sorbitol, erythritol, maltitol, lactitol, mannitol, and palatinit, and wherein a content ratio of the hydrated endothermic substance in the first liquid concentrate composition is 5% to 30% by mass per 100% by mass of the first liquid concentrate composition, the second liquid concentrate composition contains water and a viscosity modifier, wherein the viscosity modifier is present in an amount of 0.05% to 5% by mass of the second liquid concentrate composition and wherein the second liquid composition has a viscosity of 1,000 to 125,000 mPa·s at a temperature of 20°C determined using a B-type rotary viscometer after 1 minute, and the first liquid concentrate composition discharged from the first liquid concentrate filling space and the second liquid concentrate composition discharged from the second liquid concentrate filling space are mixed to form a cooling gel composition for the human body. a double-structure container including a propellant filling space and two independent liquid concentrate filling spaces and having a discharging mechanism for simultaneously discharging contents filled in the two liquid concentrate filling spaces, wherein the propellant filling space in the double-structure container is filled with a propellant composed of a compressed gas, a first liquid concentrate filling space in the double-structure container is filled with a first liquid concentrate composition, and a second liquid concentrate filling space in the double-structure container is filled with a second liquid concentrate composition, the first liquid concentrate composition contains a hydrated endothermic substance dispersed in a liquid medium composed of a solvent containing a viscosity modifier, wherein the viscosity modifier is present in an amount of 0.05% to 10% by mass of the first liquid concentrate composition and wherein the first liquid composition has a viscosity of 1,000 to 125,000 mPa·s at a temperature of 20°C determined using a B-type rotary viscometer after 1 minute, wherein the hydrated endothermic substance contained in the first liquid concentrate composition is at least one selected from the group consisting of xylitol, sorbitol, erythritol, maltitol, lactitol, mannitol, and palatinit, and wherein a content ratio of the hydrated endothermic substance in the first liquid concentrate composition is 5% to 30% by mass per 100% by mass of the first liquid concentrate composition, the second liquid concentrate composition contains water and a viscosity modifier, wherein the viscosity modifier is present in an amount of 0.05% to 5% by mass of the second liquid concentrate composition and wherein the second liquid composition has a viscosity of 1,000 to 125,000 mPa·s at a temperature of 20°C determined using a B-type rotary viscometer after 1 minute, and the first liquid concentrate composition discharged from the first liquid concentrate filling space and the second liquid concentrate composition discharged from the second liquid concentrate filling space are mixed to form a cooling gel composition for the human body.