The present invention aims to provide a gel composition capable of being stably present in a gel state in a wide pH region, in which white turbidity is suppressed. A composition containing (A) a compound represented by the formula (1) : wherein each symbol is as defined in the DESCRIPTION, or a salt thereof, (B) a compound represented by the formula (2B): wherein each symbol is as defined in the DESCRIPTION, or a salt thereof, and (C) water.