The Catalyst Renewing Serum 30ml. Benefits: This transformative silky daily serum, packed with Bio-Theriac complex, is clinically proven to help even tone while delivering visibly smoother skin. While combatting skin sensitivity, this serum significantly boosts skin firmness and measurably diminishes the appearance of fine lines and wrinkles.. What sets this serum apart is its unique ability to address multiple skin concerns in one powerful formula. The innovative blend of active ingredients works harmoniously for a youthful and rejuvenated complexion.. The Catalyst Intense Renewing Serum by Dr. Rossi DERM MD is appropriate for all skin types, including sensitive, dry, combination, and oily skin.. : :