I bought this serum to treat my skin dullness, unevenness and To treat my acne marks, (although I’ve sensitive, combination, mild acne prone skin type), with the consistent use of 3 weeks I can say I’ve seen my skin brighten toned, with plumper looking, and has lightened my acne marks around 60% in 3 weeks, and it doesn’t irritate or red the skin as I’ve sensitive mentioned earlier so i will recommend it guys.