Research is key when it comes to choosing a product like DermaFi
Unfortunately the official websites for such products don't necessarily provide all that information when it comes to what the product contains and even less about the price itself especially if they are offered through a Free Trial. http://health786.com/dermafi/
I researched Proprietary Biosphere in external websites to get more information on what it is made up of and its individual ingredients and effects but found absolutely no information except for its inclusion in various other beauty products.
The information I found on QuSome is somewhat limited as well but I did get information on the ingredients found in it, though rather general.
Though I like the fact that they are upfront about how long the trial of the product is, 15 days, I was concerned that they don't mention the full price, or what happens if you do not call and cancel.
If you do not call and cancel the trial offer and follow the instructions to return the remainder of the product.
If you are informed about the terms of the trial offer and are happy with what ingredients are in the product, which though studied very little have proven more than once to be quite effective, then I would highly recommend you do even more research on DermaFi and once satisfied that you know everything there is to know about the product order.