Opti-free puremoist rewetting drops is a sterile , buffered , isotonic , aqueous solution , that contains : a , citrate/borate buffer and sodium chloride , with edetate disodium , 0 . 05% and polyquad ( polyquaternium-1 ) ( 0 , 001% ) , preservatives and rim-100 ( peg-11 lauryl ether acid ) and tetronic 1304 .
Does not contain obligatory allergens.