Consult for proper treatment

Best for hair ...soak the dry amla powder in an iron bowl when it turns in to black colour then use that water as cleanser.its very effective

All the shampoos that are available in the market does contain one or the other chemicals as preservatives, for lather etc .So you cannot expect a total chemical free shampoo. You can instead look out for shampoos with more % of natural constituents. I generally recommend usage  based on the hair type and keeping in mind associated conditions like dandruff etc .Do contact for help.

Use hibiscus leaves crushed and mixed in water the best ever shampoo

Any herbal or ayurved shampoo you take there are some or the other chemicals for preservation purpose/ for foaming; etc.  So chose any of herbal shampoo which suits your scalp and hair. I generally recommend A for Ayurveda hair cleanser which is prakruti wise. Vat, pitta , kaf, and pro 4 varieties.

Consult any ayurveda physician you wl get benefit definitely avoid self medication

Shampoo and hair oil depends on your hair problems so it depends on which type of problem u have

Depends on your hair texture. Shampoo alone cannot help if you have hairfall or other issues. Need to take proper consultation

Do you have any hair / scalp problem..?

Should use authentic formulation made by vaidya near your place

There is no need to use a hair cleanser regularly.

Himalya Consult Ayurveda physician for proper diagnosis and root cause

Consult an expert for best advice

what are the symptoms depending upon that it varies ,share your details to know the exact solution