Is it permissible to apply 'Minoxidil' on scalp or face to get proper scalp or beard hair, given that it contains synthetic alcohol though it is not being consumed?
Applying any material on the skin or scalp is allowed even if it is Najis material as far as you clean the area before performing Wudhu or Salaah. Synthetic alcohol is not Najis according to many Maraaje'. Some scholars say that any intoxicant alcohol is Najis. Nevertheless, whether it is Najis or not Najis, it is allowed to apply it on the body or scalp.
Wassalam