I've been told that applying T in any topical form, drops or gel, of sufficient amounts for sufficient time, will result in other effects. I'm not sure how you could possibly apply it to that area and not have it also be absorbed into the tissues and eventually find your blood and circulation, carrying it and its effects all over your body. The only way I'm thinking is that you apply it in insufficient quantities for a shorter amount of time before it initiates hair growth, voice deepening and fat redistribution. But I also hear it's not advisable to screw about with T dosage, as if it does have other effects, voice deepening can stop halfway through, leaving someone with a half-formed male voice. I'm not sure how true that is, but I have heard this story in more than one place... people not taking the recommended dosages and confusing their bodies.