Superstart Renewal Booster by Elizabeth Arden | Based on probiotics and plant extracts, Superstart restores radiance to the skin's surface layer. Superstart improves the effectiveness of other skincare products. This is proven. Clinical tests have shown the following: | Optimizes the skin's microflora to strengthen its natural defenses. | Strengthens the skin's outer layer to improve the integrity of the skin barrier. | Increases hydration. naturale of the skin and strengthens its ability to retain moisture. These factors are essential for the renewal of the surface layer of the skin and for its natural defenses.