This serum is good but the bad kinda outweighs the good for me. I bought this in the discovery kit. It contains Hyaluronic Acid, Vitamin C, Vitamin E, and MSM. This is a gel serum
So like I said I bought this and it came with their discovery kit. This bottle a long with EVERY OTHER BOTTLE IN THE KIT was only 1/4 - 1/2 filled. I bought my husband the male version of this discovery kit and ALL HIS BOTTLES WERE FULL! I'm sorry but women's skin care is A LOT more expensive than men's skincare and I'm not going to keep paying for products that aren't full!