I initially purchased a mini set from skin1004 to try, and really liked it, so I bought another. Initially I didn't see a point to the ampoule, until I used it for a while. Now I love this stuff, and can't imagine not using it. Half of the time I don't even bother with a moisturizer after applying this. The toner and then the ampoule are enough for me, unless I'm really dry or it's full on winter. And it's not sticky after it absorbs in. That right there is reason enough for me, but once it's on, my face feels lovely.
The Only product line that doesn't cause some reaction from my skin. I have not had a single issue with the skin1004 basic line. Highly recommend!