8. Where importers consider or have reason to believe that a detergent or surfactant which they have placed on the market is not in compliance with this Regulation, they shall inform immediately and cooperate with the manufacturer and the competent authorities and shall immediately take the corrective action necessary to bring the detergent or surfactant into conformity, to withdraw it or to recall it, as appropriate. Furthermore, where importers consider or have reason to believe that a detergent or surfactant which they have placed on the market poses a risk to human health or the environment, they shall immediately inform the manufacturer and 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.