Formula 1. Test shampoo formulation

A.
Polyquaternium-10 (PQ-10, UCare Polymer JR-400, Dow Chemicals), 0.2% w/w

B.
Water (aqua), qs to 100.0

C.
Silicone Quaternium-22 (and) Polyglyceryl-3 Caprate (and) Dipropylene Glycol (and) Cocamidopropyl Betaine (ABIL ME 45, Evonik Industries AG) ~ 0.5% active silicone quat, 1.7

D.
Sodium Laureth Sulfate (Texapon NSO, BASF/Cognis), 32.0

E.
Sodium Chloride, 0.5
Cocamidopropyl Betaine (TEGO Betaine F 50, Evonik Industries AG), 8.0

F.
PEG-18 Glyceryl Oleate/Cocoate (ANTIL 171, Evonik Industries AG), 2.5

G.
Citric Acid, qs to pH 5.5

Procedure: Dissolve A into B and C into D. Add AB, E and F to CD. Adjust the pH with G to 5.5.