I wish there was a simple answer to this one because I'd have to say yes and no. Yes, because I think he's done a good job of taking easily available active ingredients (some prescription and some not), packaging them well and making them easy to use and understand for the average person. No, because depending on the exact products, it can be too harsh and sometimes aggravate melasma and other problems.   It's also quite expensive if you use the entire line and equivalent products can be found much less.  Remember some may need a prescription like the tretinoin and hydroquinones over 2%.  And, in my opinion, the line over uses the hydroquinones. Here is a list of my favorite skincare products.  

Dr. I