Foaming or lathering is very important to the consumer and therefore, it is considered as an important parameter in evaluation of shampoo.
Herbal Essences and formulated shampoo produced the foam volume above 100 mL (115,
113 mL respectively) while dove shampoo generated a foam volume of 92 mL.
The foams generated by formulated shampoo were small, compact, uniform, denser and stable similar to commercial samples.
All tested shampoo had the same foam volume for 5 min showing that their foam has
good stability.
The higher foaming property of formulated shampoo may be due to the combination of
soapnut, Sheekakai and Ziziphus (Sarath et al., 2013).