January 28, 2012 If your Vitamin C serum stings on the skin when you apply it, it doesn't mean it's "working." It means it's irritating! Look for no-sting formulas.
We know there is more to skin than dry, normal and oily. That's why we've created NINE unique skin types to give your skin the best results. Read more >
"I've never understood how companies can say their products are suitable for all skin types when clearly all skins have different needs."

Renée Rouleau shares her nine skin type philosophy so you’re sure to get results.