Hello and welcome to Healthcare Magic. Thanks for your query.
Certain oils or hair growth formulas may not agree with certain people. It appears that your daughter and you must have had some sort of an allergic reaction
to the oil, thereby resulting in the drastic loss of hair.
Usually, when the hair has fallen due to some irritant substance or a topical application, there is a good chance that it will grow back. This is because though the hair may have fallen off, the hair follicles are likely to be intact and can regenerate hair. However this may take about 3 months - which is the average time taken for new hair to get generated. So, I would advise you to stop using any medicated oils or formulas and stick to plain unperfumed coconut oil. Hopefully, the new hair should get generated in a few months time. You can continue the vitamin supplements and ensure that she take a nutritious and balanced diet. Avoiding stress
by practising relaxation techniques
, engaging in regular physical exercise, etc. will also help.
Wish you all the best.
Dr. Sheeba Stephen