I shampoo one day a week and have never dyed my hair and it's 3 feet or so long and straight with fine strands. I only use wide tooth combs on it. When I have hair fall I use my own urine to stop the drop. 100 hairs a day is normal.
You catch your urine and if you desire you can use your shampoo and then rinse and then pour urine on your head and wait as long as you can and then rinse out. It leaves a lovely oil and thickens the strands and hair drop stops, except the normal amount. Urine also has hormones in it and hair and hormones are a happy team. Urine is sterile and very healing of bacteria and fungus on the skin. Most animals pee on their feet.
I have a lot of comfrey and use it daily as a foot soak. I fill a stockpot ( gallon?) with water and wait an hour while chlorine dissipates then I heat it with 7 big leaves 10-12 inches long, and a sprig of mint and then pour it in a foot soak pan with Tablespoon apple cider vinegar. I dump this out on the drip line of trees in my yard, we have over 200 of those.
I decided to try the mint and comfrey mixture when it got a nice dark color on my hair, a cup of it. I used no shampoo and put it on my hair when it is wet and let it sit and then rinse. My hair usually tangles but not now. It is full and combs easy and feels like it has oil in it as cream rinse would leave.
I drink comfrey and mint tea and eat the leaves. 5 small leaves 6" long and a sprig of mint. I make tea out of it until the water doesn't turn dark anymore, then I eat the remains.
I also add the flowers to my tea drinks
Comfrey has been known to heal bone problems 20 yrs old and heal skin wounds so quickly you have to be careful the infection is healed before using it. In history people ate comfrey salads in season like lettuce.