I honestly don't really get the hype with this product. I don't think there's anything special with the ingredients. They're ingredients you can find everywhere nowadays--especially the niacinamide which is really the only ingredient proven to brighten or give that glow.
The product itself seems so little in proportion to the others products in the kit, and you'll definitely end up finishing it first before anything else even gets to half.
Also I don't get the point of the gold flakes/ glitters. It seems gimmicky, possibly irritatating, and an unnecessary expense to the costing of the product.