Unlike the consensus of this thread, I have never found Ali to be lacking in the technique, problem solving, product knowledge department. Guests such as Keeley, Adele and Fiona do seem to know their stuff. There are many issues, which the viewer would appreciate being addressed, which are omitted from the presentation. The main one for me, is animal testing, does the range contain any animal by products or ingredients, is the company PETA approved, i.e. it may claim to be animal friendly but, if it is, why not sign PETA's statement, and be able to use the leaping bunny on it's packaging. What are the ingredients, and which one appears first in the listing? Does it contain SLS? Probably an honest answer to this last question, would see many ranges experience a lull in sales.
I fully understand, each product has a limited length of air time, so expecting every concern to be answered on every presentation, would be a tad unrealistic. Each item on QVC, not only in beauty, has many airings so, if a fact cannot be addressed in one showing, mention it in the next.