Weekend Wonderings: If Vitamin C doesn’t penetrate the skin, what is the benefit of it?

In this post, Weekend Wonderings: Adding Vitamin C to a product, Rosi asks: If vitamin C does not penetrate the skin, what is the benefit of it?Good question! We use a lot of ingredients that don’t penetrate the skin well, like hydrolyzed oat protein, carionic polymers, and oils, to name a few, and we know…