Hi, My daughter is 7.5 years old. She has thick hair and over sweating in head. Since 2 weeks she is having dandruff like while combing ( white white) and hair fall has increased. Normally 10 to 15 strands of hair will fall. Now it has increased to nearly 100 strands of hair each day. My area has hard water. I use to oil her hair once in week 1 hour before hair wash. Coconut oil. Kindly suggest some solution and shampoo.