since my hair has the habit of accumulayting a lot of dust particles within them,thay get sticky and start appearing as if i have puts lots of oil in it.no matter how much i shampoo my hair after two to three days ,they still dont seem to get rid of the excess oil and dirt that is settled on my scalp.For this my husband told me that he will be getting me a pack of alba botanica shampoos when he comes back from his trip .since my hair does not react so well to shampoos that have chemocals and synthetics in them is alba botanica natural and not damage my hair?which botanical extracts are alba batanica shampoos created from?