Head & shoulders cool Menthol Shampoo is good to use. It has very pleasant smell and colour. It gives chillness to head like air conditioner.Sometime during winter season this creates headache due to coolness and concentrated fragrance. It is very safe and un hazard to use.
It provides smooth and silky hair.
with the help of this we can identify whether the water is hard water or soft water. because good quality shampoo never buffer in hard water. head and shoulder never form foam in hard water.
I suggest to minimise the concentrated fragrance because it may irritate the eyes also.