There is an unmet need for effective topical therapies for patients with uremic xerosis and chronic kidney disease-associated pruritus (CKD-aP). The long-term efficacy and tolerability of an emollient containing glycerol 15% and paraffin 10% (V0034CR) was evaluated in a phase3 study. In this randomized, double-blind, two-parallel group, vehicle-controlled study, patients with moderate-to-severe uremic xerosis were randomized to once-daily application of V0034CR or vehicle control for 28days (periodI). This was followed by a treatment-free period of ≤ 21days (periodII), then all patients received open-label treatment with V0034CR for ≥ 84days (periodIII). Outcomes included treatment response at the end of periodI (El Gammal's xerosis severity score), instrumental measures of scaling (D-Squame technique), time to relapse during periodII, rate of recurrence during periodIII, pruritus severity over time, patient acceptability, and adverse events (AEs). The intent-to-treat population comprised 235 patients randomized to V0034CR (n = 118) or vehicle control (n = 117) during periodI. Treatment response at the end of periodI was achieved by 71 patients (60.2%) in the V0034CR group versus 48 (41.0%) with vehicle control (p = 0.0041). This coincided with greater reductions in the total surface area of squames (p = 0.001 vs vehicle control). Xerosis relapsed progressively without treatment in periodII; however, remission was durable under maintenance therapy in periodIII. Improvements in pruritus severity were comparable between V0034CR and vehicle control, suggesting that the antipruritic effect of V0034CR was mainly exerted by its oil-in-water emulsion base. V0034CR had high patient acceptability and was well tolerated; the most common treatment-related AEs were irritation or erythema (2.1%), exacerbated pruritus (1.3%), and vesicles at the application site (0.9%). These data support the use of V0034CR, with its hydrating and occlusive properties, for the long-term management of patients with moderate-to-severe uremic xerosis and CKD-aP. ClinicalTrials.gov identifier NCT01084148; EudraCT number 2006-002201-31.