I bought this serum because I loved the Resolution gel mask and I am NOT disappointed! I can't speak for its dark spot correcting effects as I don't deal with them, but it's hydration factor is perfect! Definitely ideal for combo skin types and also really helps minimize pores & evening out overall skin tone! A perfect serum for summer, on hot days I even skip moisturizer! Winter it'll be the perfect to layer before moisturizer! I also blends really well in double seruming if you want to mix this one with another