My daughter just had head lice and used the treatment nitenz headlice is all gone but its left nasty smell of large flakes dandruff?

Nitenpyram is a medication used to treat head lice. One of the possible side effects of nitenpyram is flaking of the scalp. This is usually a temporary side effect that will go away after a few days. In the meantime, your daughter can try using a gentle shampoo and conditioner to help reduce the flaking. You can also try applying a small amount of tea tree oil to her scalp. Tea tree oil is a natural antifungal and antibacterial agent that can help to soothe the scalp and reduce flaking.