I like this serum, a few drops and it smooths evenly over my whole face.  I haven't noticed a cooling sensation when applying, but it does absorb quickly and leaves my skin soft.  I have skin that is prone to breaking out, so I pick products carefully that are for sensitive skin.  This serum didn't cause any break outs while using it, and may have kept the pimples at bay.  I didn't notice a fragrance in the serum, it smelled faintly of medicine. It is a light blue color, but it wasn't noticeable after blending in my skin.  All in all I like how this serum makes my skin feel soft.