I've been lowering my dose of pantothenic acid since it made my hair fall out and over Christmas I've stopped taking it completely. On the days I missed, no new breakouts occurred and so I thought its results would last a long time. However, I haven't taken it for about two weeks now and the other day, two spots appeared. This morning, another two had appeared. I don't know if it was directly because of the halt in taking pantothenic acid - I'm sure all the sweet, fattening shit I've eaten this Christmas has had a bad effect too but whatever it is, pantothenic acid seems to be the only thing which works on my skin providing I don't mind taking it a lot...or losing my hair.