Open a premeasured sachet, empty it into the bathtub and turn on the tap or sprayer nozzle.
Bubbles are not generated by putting the product in after filling the tub with water.
The stronger water pressure is, the higher water temperature is, the richer bubbles become.
Whisk the water in the tub with hands so that you can take a much richer bubble bath.
Rinse the bathtub thoroughly once you are done to avoid the possibility of any staining.