Abstract:
This study compared the effects of nonionic polymer, which are polyethylene glycol (2 to 6 % w/w), hydroxyethyl cellulose and cetyl hydroxyethyl cellulose (0.005 to 0.1953 % w/w) on foam stability of sodium lauryl ether sulfate. All formulations significantly yielded (p ≤ 0.017) greater foam with better foam stability than the control at confidence 95% unless the 0.1953% cetyl hydroxyethyl cellulose system. Polyethylene glycol 400 concentrated 8.33% was chosen to be developed into a stable formula that passed accelerated stability condition and further assessed on preference in 30 volunteers in a comparison with the control base formula. The volunteers 66.67 % greater preferred on foam of the polyethylene glycol 400, while 26.67% satisfied on the control, and 6.67% could not differentiate the tested formulas. Cleansing product containing 8.33% of polyethylene glycol 400 was shown to enhance foam and gain the volunteers satisfactory.