I bought this to bring with me when I travel instead of my full skincare lineup and realised my skin always felt and looked better when I went away. Eczema flareups disappeared when combined with an eczema cream (non-steroidal). The only thing I wonder about with this serum is how much vitamin c is in it and that the bottle is clear. Not much details available about that. But when my skin starts to flare up or gets sensitive to my other products, I always come back to this.