Hello, usually in the formula usually use
น้ำหอม just a little. which at a small rate did not affect the bubbles formed. or have little effect cleaning efficiency Not related to the amount of foam, both are different matters. But most consumers tend to look at the same thing. If developing a formula for sale It is necessary to take into account the consumer's point of view as well. Shampoo formula or liquid soap, if you want to adjust the viscosity, recommend
EasyThick ,
SugarThick or
Hydroxypropyl Methylcellulose is best to use
Gel Maker /
thickener Other types may affect foam texture. Make the bubbles go down