Start with Polyquaternium-7 or Polyquaternium-10 as candidates for conditioning shampoos. Compare wet combing, foam and clarity in the finished surfactant base. Assess Polyquaternium-6 if wet slip is an important target.
Consider Polyquaternium-6 for slip and Polyquaternium-10 for conditioning or deposition. Compare Polyquaternium-22 and Polyquaternium-39 where an amphoteric polymer is of interest. Evaluate at the intended finished pH.