I've settled on Derma-E's vitamin C concentrated serum, which has moisturized my skin and appears, at least, to make it a little softer and brighter. A 2-ounce bottle retails for $25, but right ...

The best Vitamin C serum is the Derma E Vitamin C Concentrated Serum. It’s got all the vitamin C you need with none of the nasty additives that can sneak into lesser bottles. Vitamin C serums ...