Results: The attributes expected by consumers in the herbal salt for foot bath included in the test product were brown (21.88%); smell of lemongrass (19.53%); packed in single dose, in paper box and containing many small zipper bags (57.81%); price from 100, 000 to 150, 000 VND for a 30-day course of use (51.76%); foot bath water temperature is 30 - 38oC (65.23%), suitable foot bath time is 20 minutes (53.32%).