I exceptionally like that the solution is packaged in an amber glass bottle thus preventing the vitC from being degraded when exposed to light. It is also formulated with one of the highest concentration of Vitamin C available in the market (15%!!!) for maximum effectiveness. Even then it does not irritate my skin or cause any breakouts nor result in any stinging feeling after using it. I generally use 5 drop each time which is an adequate amount to apply all over my face without leaving any sticky residue. There is no fragrance added thus less one irritant ingredient..
Overall, it has definately brighten up and smoothen out my skin giving me a clearer and more perked up daily look.
It is also always a good practice to apply sunblock after using any vitamin C skincare product so be sure to keep that in mind when using it during the day. Also because it's fragrance-free, it does have a very slight chemical smell during application luckily it dissipates quickly after applying.
