Watercolour painting by an unknown Burmese artist depicting 19th century Burmese life. Caption from book: "Shampooing. Hnin-Hnait-Thee We have here a son and daughter dutifully performing the office for their father and mother. It is a daily luxury and after being practiced frequently becomes quite a necessity, as some people cannot go to sleep without it. " For more description see the source link.