6. Where distributors consider or have reason to believe that a detergent or a surfactant which they have made available on the market is not in compliance with this Regulation, they shall inform immediately and cooperate with the manufacturer or importer, as applicable, and the competent national authorities and shall ensure that the corrective action necessary to bring the detergent or surfactant into conformity, to withdraw it or to recall it, as appropriate, is taken. Furthermore, where distributors consider or have reason to believe that a detergent or surfactant which they have made available on the market poses a risk to human health or to the environment, they shall immediately inform the competent national authorities of the Member States in which they made it available on the market to that effect, giving details, in particular, of any non-compliance and of any corrective action taken.