When does dht (dihydrotestosterone) cream work for growing beard?

Unknown: First of all, Dht is not available in any topical form in this country - at least not legally - so if someone is offering such a cream, who knows what's actually in it? Second, i would not recommend applying any sort of testosterone-based product directly to the face. This can produce oily skin, acne, and other side effects, with no proven benefits that i know of.