Peter Thomas Roth Super-Size FIRMx Collagen Serum

Peter Thomas Roth Super-Size FIRMx Collagen Serum Brand New forms of collagen: collagen, soluble collagen, hydrolyzed collagen, and collagen amino acids. It's also formulated with hyaluronic acid and squalane. It helps to hydrate skin and to improve the look of dry fine lines and wrinkles. How do I use it: Apply twice daily to a cleansed face and neck. From Peter Thomas Roth.