Alopecia Areata is bald spots that occur all of a sudden on your scalp. I dab it on once a day on bald spots for a week to a fortnight - and then forget about it (if I can) and hope:) So far it seems to start the growth of hair again. It changes the scalp texture from red and irritable back to normal scalp. Within 6 weeks to 8 weeks usually spot is covering with little hairs. The iodine may even help the fatigue that comes when your hair falls out too - when a bald spot is occurring I tend to get deathly pale and feel exhausted.