No Makeup Foundation Serum SPF 20 - Ivory by Perricone MD for Women - 1 oz Foundation

What is the color equivalent for the original formula?

what shade was the very first original shade a few years ago? It was almost an identical skin color match and I'd like to try to find the best match.

Is this sweat proof? How does it hold up in heat?

What happened to the foundation that was dewy not matte?