I decided not to do this...was too expensive and he warned me I needed to stay out of the sun for a period of time. This isn't possible because I work at a plant nursery part-time. He then prescribed me a product with 4% hydroquinine called Aclaro. I used it twice daily. It took about 2 months until I saw good fading on my cheek spots. For some reason the spot on my nose didn't change! In the end I bet I spent more on Aclaro both in terms of money and time than the Obaji. So, my recommendation is go for something that'll give you fast repair, not a product like Aclaro or even Perricone (tried that too).