For this you will need

Honey
Lemon juice
Chamomile tea

What to carry out:

Take 2 tbsp of normal?water
Dip 1 tea bag of chamomile tea
Infuse it
Now add 1 tbsp of honey
Squeeze out half lemon into this

Apply it on hair that you’d like to paint.?Ensure that is stays against your hairs only for Fifteen minutes after which wash it. For better results try, dry the hairs in sunlight before washing.

Shampoo and condition your hair

Reference

https://glowpink.com/blog/chamomile-tea/