As titled this is the first Vitamin C serum that I've used, and I am enjoying it so far- my PIH has lightened a bit, but theres some ways to go.

I keep it in its originally packaging in the fridge, however in the future I will probably decant portions of it into a smaller bottle to minimize oxidation.

For first time users I would highly suggest patch testing and introducing it to your routine slowly as this serum is quite strong. The first few times I used it I did have a small reaction (what seemed like hives- yikes!).