DHT is basically a biproduct of testosterone. Testosterone couldn't be made of DHT. DHT is very much more potent than testosterone and thus causes more prominent changes in facial and body hair, penis growth, and also, sometimes, hair loss. Men who are balding sometimes go on DHT suppressors or have such things applied to the hair follicles. Testosterone cream and testosterone itself would release a certain amount of DHT but not nearly as much as concentrated, isolated DHT. And yes, no longer available, which is really a shame.