Danger,
Glad I could help. Couvre costs $20, but the tube lasts a long time--you don't have to use very much. I wouldn't call it a night and day difference, but I do think that it makes a considerable difference. It really depends on the color of your hair and skin. I have black hair and light-colored skin, so there is a HUGE contrast. The Couvre darkens my scalp,which makes the hairloss less noticeable. If you have light-colored hair, the Couvre wouldn't make that much of a difference. If you can only afford one of the products, buy the Toppik. When I first used Toppik I was STUNNED by the results. For me, it really was a miracle.
How much should you use? That depends, too, on the contrast of your hair / skin, the amount of hairloss, and the thickness of your hair. The best thing to do is to hold the container about an inch to two inches from your head and give it a few taps. Then, gently pat your head and comb the area. If you are not satisfied with the effect, try a few more taps. I do agree with the other guys when they said that too much Toppik can ruin the illusion. The crown is easy to cover, but the hairline is a little tricky. I don't use any in my hairline anymore, but that's only because my HT grew in and looks pretty good in the front. I hope this helps.
Scarymemo,
Minoxidil is a pain. I stopped using it a while ago. I only use Proscar now. My advice is to use the Couvre, dry your hair, use the minoxidil, let your hair air dry for about ten minutes, then add the Toppik. Good luck.