My favourite serum for 10 years

I always come back to this great product. First used it 10 years ago and it was a life changer - it smoothed my skin tone and erased post acne scars and made my skin look brighter. I always come back to this serum since then. I love all Sunday Riley products but this is my favourite of all times. I use it a few times a week, sometimes on its own for deeper exfoliation and sometimes put a moisturizer on top. When used in its own it doesn’t dry my skin as lactic acid is not only exfoliating but also moisturizing. I really like the smell, too.