Black American women can use Toppik on loss edges. The product comes in different colors for different types of hair colors and is not specified as to what kind of hair to use it on. It feels up the hair as fibers entangle with your real hair in 30 seconds to patch up the place with little hair. You can consult a hairdresser to be advised on the best action to follow.
It depends on the reason for the hair loss. That could be genetic, and if so, it's from the maternal side, not the paternal. If thinning is hereditary in your family, then you could, but after you see how far it will recede. If it's because of unintentional damage from hair products, then you can get it, but you have to stop what start it in the first place.