"Liposome encapsulation technology"

Someone I know has showed interest in a certain nutritional supplement brand, and I have included an example of their marketing material below. I have the feeling that they might be more marketing than science, or that there might be nothing proprietary or special about their product.

I have not included any links or brand names to avoid potentially breaking any terms of use. Could someone more knowledgeable that I am evaluate the following statements:

"
Finding a Better Way to Deliver Vitamin C to the Body's Cells

Ultimately, a cardiologist introduced him to the concept of "liposome encapsulation technology" (LET). Although the technology had been used by researchers and the pharmaceutical industry since the 1970s, it wasn't being used for dietary supplements.

[Name removed] soon found out why: encapsulating vitamin C was much easier said than done. Every substance requires a unique combination of phospholipids and other ingredients to properly encapsulate it.

After almost two years of trial and error working with scientists, PhD's, and manufacturers, we finally developed a product that was (and still is) far better than our expectations. We are now convinced, through personal experience, clinical results, and rave reviews, that [Removed Marketing Trademark] Vitamin C is the most bioavailable, most effective oral vitamin C available anywhere.
"