Alternate these two potent serums for the ultimate firming and lifting routine! Liquid Surgery uses the revitalizing properties of oxygen to completely revamp the skin to restore volume, firmness and radiance. After finishing a bottle of Liquid Surgery, switch to the Cross Lift Serum Ultrapeptide to target epidermal and dermal renewal, to noticeably smooth and plump the skin, firm the facial contours and promote the synthesis of collagen.