Table 1. Test formulas

The various formulations used for the described studies include: A) a silicone-based micellar shampoo stabilized with a rheological agent; B) a non-stabilized version of the same boosted with increasing amounts of a cationic surfactant; C) silicone-based structured shampoos boosted with increasing amounts of the same cationic ingredient; and D) the silicone-free version of a structured shampoo.