I used the DNC for years, it worked with the old formular-yellow color, but not the new formular-the clear one. I dropped it, because it was pricy, and did not help after they changed the formular. I tried it for 9 monthes again last year, but no result. I tried it again because I did not know what I could use, and hoped it would work.
I also used the DNC-L for more than 1 year, again no result, I think actually it is even worse than DNC!
The worst of all DS Labs changed the forular so often without letting the customers know, so the customers do not know what they will get by next order, and if it will help or not!!
Now I have been using 15% minoxidil+5% AA since 1 month, I ordered it from UK, I can not say how effective it is, but it seems I am losing less hair for the time being, and the product dries at reasonable time, and is not meesy like many other minoxidil products.