I did not find anything bad about this product so far.There is little stickiness to it but it is not very noticeable.

The Centella extracts are useful to  speed wound healing, improve skin elasticity, build collagen, and improve blood circulation.Centella is a known component of Kbeauty.
This ampoule is not too thick or too watery just the consistency of oil but not too sticky.There is no fragnance to it which makes it great for me.
There is very little stickiness to it if you use it on freshly washed dry skin but if you mix it with your moisturizer you are not gonna notice it.I been using it since two weeks now and I like how it gives more elasticity to my skin and added a glow to my face.