Neutrogena's light therapy acne spot treatment uses red and blue light therapy to treat pimples without flaking or irritating skin. It uses a dermatologist in-office acne technology to quickly target and treat breakouts. It’s clinically proven to speed up the reduction of breakouts. •Honest testimonial, and by no means am I an expert or affiliated with the manufacturer of this product. I was just an acne sufferer. It’s my personal device, I used it and can honestly say that it did help shrink and speed up the healing of minor breakouts. I sometimes used it in conjunction with a Foreo Espada (also for sale in my closet) if it was a slightly bigger breakout. Great to keep in your purse for on the go treatments. I would not recommend it for cystic acne. I used it on that as well and it was minimal if any help to reduce that type of acne. But you can be the judge. Gently used. Will come in original box, and I will include a new battery, I just put it in (the bottom has a very tiny screw, and this is where you access the battery). If I find the directions I will update the listing to include them. Neutrogena, acne light therapy, red and blue light therapy, skincare, acne care, light therapy, sbcnr spot treatments