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A quick search  shows that the bulk of their products are pseudovitamins that give in to the latest fad diet and nutrition crazes, such as selling products loaded with vitamin D and resveratrol. Like the makers of HeadOn, their products are promoted heavily on radio and television, although (unlike HeadOn) usually through infomercials. Purity Products also likes to brand their products as "evidence-based," even though they have released no studies or data to back such claims. Their Advisory Panel seems about as full of crankery as you can get.
Apparently, they do not have a good track record with their customers either,  and not just because their products are loaded with more woo than help. They even have to have a web page dedicated to responding to accusations that they're scam artists.