Aloe vera based cosmetic products aren't regulated. Per the article, Bloomberg had the products analyzed independently and are reporting on the findings. It is unknown for how long this has been the case and, before this article, what the exact composition for each product was despite their labels.

This is pretty much the libertarian solution: let the market handle it, maybe someone with the means to will care enough to look into it. Millions of people applied a mystery gel to their skin, some in an attempt to treat an ailment, for what could be years or decades.