Nadrolone is the only aas that want cause hairloss in people who are prone to mpb. Because nadrolone converts to dhn in the scalp and skin which is a weaker androgen than nadrolone is. Not because it has no effect at all, but deca will also shut down natrual testosterone production(including dht) and this more than compensate for the dhn.

If deca is taken at 400mgs ew or less, it can actually be easier on the skin and scalp than using no aas at all!