Mario Badescu Peptide Renewal Serum and Peptide Renewal Cream sample At Mario Badescu Skin Care, we’re serious about anti-aging. Our new Peptide Renewal Cream and Peptide Renewal Serum (for dry, mature skin) encourage a firmer, smoother and more youthful-looking complexion. Targeting fine lines and wrinkles, sagging skin and uneven texture, the serum and cream may be used alone or as the ultimate anti-aging duo.