Reddit reviews Digestive Wellness: Strengthen The Immune System And Prevent Disease Through Healthy Digestion, Fourth Edition

For acne usually you have to do hardcore lifestyle changes. The video from "acneanswers" seems promising, i haven't seen it all though.

In general for acne you should:

• Take care of your digestion, this book is awesome: Digestive wellness
  
• Another overall health book i really like is this: The Ultramind solution
  
• In general avoid dairy products and foods high in glycemic index.
  
• For start these are enough, if you finish the above books then you will find your way by yourself ;)
  
  About dermabrasion and microdermabrasion, in a few worlds:
  
  
• Demrabrasion is for deeper scars and if performed by a VERY good and experienced in this procedure physician can have great results.
  
• Microdermabrasion is for thinner scars, it is has lower risk for complications but still an experienced and well trained physician is needed.
  
• You can find many reviews around the web, check http://realself.com.
  
  I think you have lot of homework to do xD
  Good Luck
  
  PS: These books are gold, read them!