This is one problem all School going children face in life.
Tips 1:
Take 2tblspns of Vinegar and dilute with 2 tblspns of water.
Apply and leave for an hour before washing well.
Tips 2:
Take a cup of Coconut oil and add 1 tspn of crushed Camphor
to this. Heat the oil till camphor melts. Apply well on scalp
while the oil is still warm. Leave for 1 hour before washing.
Tips 3:
Make a paste of Basil leaves. Drape a towel and leave
overnight or at least for 2 hours. Wash.