[Product Question] Has anybody used Instanatural's Niacinamide Serum for anti-aging? Thoughts?

Beauty Tips For Body Care
I'm talking about this product: http://www.amazon.com/InstaNatural-Niacinamide-Vitamin-Topical-Youthful/dp/B00J5N0Y4UThe reviews are pretty solid and I was wondering if anyone's tried it.
Girls Blog 2015
Submitted by dannydiegomusic