I have tried so many serums for couple years, nothing worked until I found this. This is my second bottle. It\’s worth every penny!!! It fixes all my problems: blemishes/acne, ( even if I get one, it\’ll be gone the next day, yes, the next day), uneven skill tone, dull texture, pores. I don\’t need to use foundation anymore and feel so confident!!. CONS: smell so bad ( but I get used to it now), tingling feeling.