Hello, if it's
SemiColor - Wood Black (
สีผม semi-permanent black ) is a powder, must be dissolved in hot water. If it is
SemiColor - Red Brown (
สีผม semi-permanent brown/red) will be liquid. It can be mixed with the water of the formula at room temperature. This formula can be thickened by
BTAC and
Cetyl Alcohol , no need to add gelling agent again.