This serum absorbs well. Leaves your skin feels smooth and nourished with hydration.

I did not get a chance to use the biotherm elixir.

My skin looks beautiful and luscious. It’s the start of winter mid fall and usually my face is wind burnt and dry with this product when I was using it it was magical almost with in a week or so I could see my skin tight. Smoothing out of my laugh lines, my pours were thinning my daughter could tell right away then she disappeared into my bathroom. I found her looking though all of my products trying to find what I’ve been using. So I’m going to say something is working.

My skin felt nice the morning after using the sample

I enjoyed this sample so much that I already bought a full size one. I have noticed such a difference in my skin after using this. It looks smoother, brighter and overall just very healthy.