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