Are there any studies related to the benefits of Vitamin E (Tocopherol or Tocopheryl) from "natural" sources?

Question

By "natural", I mean botanical sources.

As a health-conscious consumer, I've been trying to find skin and haircare products free of harmful chemicals (ewg.org has been a very helpful tool). EWG illustrates how some ingredients, such as "Vitamin E" (aka "Tocopherol" or "Tocopheryl") has a contamination concern ("HYDROQUINONE" - a highly toxic substance with a score of 10, the highest EWG hazard score!).

Unfortunately, most products (for skin, hair, and even babies) contain Vitamin E. So, I contacted a reputable/high-end baby product manufacturer regarding the contamination concern (i.e., When can it happen? How can it can be prevented, if at all?) Their response: It may occur during manufacturing process (NOT post-production). Plus, they "claim" it does NOT apply to botanically-derived Vitamin E.

An EWG rep informed me that this "claim" cannot be proven. I followed up with manufacturer (twice), asking for any studies that would prove their claim, but they never replied.

Answer 1

"Vitamin E" isn't even a vitamin.  There's no deficiency disease associated with a lack of it.

Answer 2

not that I know of either