Ditch the water, preservatives, and the plastic bottle and try a solid shampoo instead. These little shampoo pucks include only gentle and plant-based cleansers, and are scented with essential oils. They are completely biodegradable so you can feel good about using these in your home and while traveling or camping. Just apply onto wet hair near your scalp in a few areas, add water and lather up! Rinse and condition, if needed. Great for an all-over face and body cleanser too. Very gentle. This bar contains no preservatives so please allow to dry between use.