(Subject) The formation method of the pellicle of the laminate including the problem, is the hydrophile activated water processing agent, and the pellicle of the hydrophile activated water processing agent as to the disclosure and hydrophile activated water processing agent are provided. (Means for solving problems) The means for solving problems provided to the disclosure contains the radical polymerization monomer equipped with the carboxy radical and/or the polymer (A) and the hydroxyethyl cellulose (B) including the salt (a-1) in the response element and the mass rate [(A) / (B)] of the solid conversion of (A) component and (B) component are 5/95~95/5 and it is the hydrophile activated water processing agent in which the pH of the aqueous solution in which for the concentration of the solid content summing (A) component and (B) component, 1％ is is 2.0~5.0.