Their concentration is always higher, hence why their cost is higher. The reason why they can have a higher concentration is because of the siloxysystem gel vehicle. It keeps the drug on your scalp through a slow release, which delivers most of the drug to your scalp and limits systemic absorption.
Plus, the molecular weight of dutasteride is higher, so I would imagine that it is more difficult to absorb through the blood. Of course, this is speculation. But a lot of doctors agree, which is why topical dutasteride is so highly sought for, and regarded as the new gold standard.
But not all topicals are created equal, that’s why I’ve been excited for XYON to release it because the siloxysytem technology +dut seems like a killer combo.