Based on the article, she's a pioneer in using new biological pathways for a cosmetic effect. You don't get to be first if you're trying to study safety, and that industry as a whole does not pay much attention to safety.
Therefore I find it extremely likely that she has evidence of biological effect in your body's cells, and has not done research on unexpected possible side effects in the same cells that she's impacting.
Oh that's brilliant. If she is a pioneer then she is automatically pronounced guilty, and the people who come and share her work with much less risk are to get the benefits.
I see so much enterpreneur spirit in your comments on HN that I am speechless.
Is this your life choice as well? Looking for people who innovate, bash them over their mistakes and then steal their good results?
Therefore I find it extremely likely that she has evidence of biological effect in your body's cells, and has not done research on unexpected possible side effects in the same cells that she's impacting.