okay this is what my mom did for my daughter’s hairs.
take olive oil add some meethi dana and kalonji in it and put in clear glass container and keep it in sunlight for good 15-20 days then start using the oil . meethi dana & kalonji should sit in the bottom and should not be applied to hairs only the oil. it gives shocking results.
you have seen my daughter’s pic of 2 months back in which she just have hairs in the centre but now masha allah she her head is fully covered with hairs. my mom puts oil in her hairs 2 times a week.
key is to keep in sunlight …it does wonders.