For what it's worth... I stopped using shampoo and my hair is so full. Im 53 with very few grays but that might be genetic, although i believe when women start dying their hair they actually accerlate the graying. I use either just water, or organic soap, sometimes apple cider vinegar, occasionally baking soda just to purify. I've been a housewife for 23 years and since the beginning I've switched out chemicals for natural and/or organic. The only chemical I'll use to clean is (very sparingly) bleach on surfaces that touched raw meat, and this organic dishwasher detergent. For my clothes I just throw baking soda in the wash. I feel so much better after kicking all these chems out, and i cook 90% from scratch too, with organic ingredients. It all makes a huge difference