Hello
Glycerin can be added to the formula, but
น้ำมันหอมระเหย or
น้ำหอม Any
น้ำหอม , if used less than 1%, mix it with
Sulfate Free Shampoo Base before mixing in other steps. But if using more than 1%, there must be a helper to coordinate, recommend
Flora Solve Clear helps to coordinate by if If you want the formula to be transparent, you must use
Flora Solve Clear at a rate of approximately 2.5-3.0 times that of
น้ำหอม or
น้ำมันหอมระเหย but if the formula is opaque, then use only 0.5-1.0. as much as it is enough to mix with
น้ำหอม before adding it to the formula.