Works just as well as a few high end serums I have tried. I can't afford the $100 price tags that come with those high end serums, so I was looking for an affordable solution. This fits that bill!
I found this at the doller store of all places. They were rapid selling Target stock. I paid $3 per bottle and stocked up! Still, the regular price is amazing compared to high end prices.

Over all, this is great paired with a cream suitable for your skin type. I found this brightened some old acne scars and left a nice glow.