05.01.16
US Patent No. 9,295,632 B1; L'Oréal, Paris, has been awarded a US patent covering an acidic hair pretreatment composition. It is comprised of at least one film-forming latex polymer; at least one neutralizing agent; at least one organic solvent; and water. The pH of the composition is from about 2 to about 6. The composition does not include a dye.