you can make a hair mask of green clay and water and a couple of drops of natural oil.
section your hair, smooth the mask from scalp to ends. massage the clay into your scalp to cleanse it and work up sebum, sweat, dirt, odor. wrap your hair in a plastic cap or bag and wrap a towel around that.
let it set for at least a half-hour.
thoroughly rinse with lukewarm water, squeezing the sections as the water rinses away to make sure the hair length is getting cleansed. massage scalp under water stream.
gently squeeze dry, and smooth a small amount of oil onto ends and hair.
you could also make a paste of baking soda and warm water with a couple of drops of oil. use this on your scalp only, as baking soda can be drying on the hair. your hair will be cleansed as the solution is being rinsed from your scalp. follow with a vinegar hair rinse, comprised of one teaspoon apple cider vinegar in 2 cups of warm water. pour it over your head, massaging it into your scalp and squeezing it into your hair. let it set a couple of minutes before rinsing it with lukewarm water. follow with a little oil smoothed onto your ends and hair.
i think clays and baking soda are far better cleansers for scalp and hair. they leave the scalp clean and healthy, the hair soft and residue-free with a natural, fresh smell that is void of any kind of aroma.