The first step is to use the proper tools for detangling the hair. You should use high-quality clippers, detangling brushes and combs, and detangling sprays that contain a conditioner to soften the coat. Massage the knots in the dog's fur to loosen them. Use a soft brush to gently brush the hair and loosen it. Follow up by gently running a dematting comb and a detangling conditioner to soften the coat.