The even better clinical is way stronger then their old and first one. The older one was cheaper and of course a diff formula. The clinical is 49.99 and the discontinued one was 39.99 I worked at Clinique for a year and in that year that's when they came out with the clinical. That is a doc strength for 49.99. Don't forget you need to wear your sun screen of at least 30. We always recemond using the even better moisturizer kuz it has the SPF and it has the same ingrreadents as the serum does. It gets rid of acne scars, discolorations, aging spots, sun spots and any other hyperpigminyayion. What it does it tagets the extra melanin your skin is producing ad breaking it down by exfoliating your skin which brings new fresh and brighter skin. I pump is good for the entire face. Dont forget to use it at night. It worked on my husbands ecsma scars.