Yes, testosterone does not inhibit your ability to grow your hair long. I have heard that T cream results are a bit slower but it is obviously not a fact, everyone is different. And as I am on injectable I cannot tell you how fast it will happen. Also, it isn't a matter of days. I am 3 weeks on T and my voice just dropped for the first time and I am beginning to get darker facial hair(which apparently is relatively quick). Changes take time, it doesn't happen right away.