Scholl Velvet Smooth? Express Pedi has an ergonomically shaped Soft-Touch handle, a specifically-designed Micralumina? replaceable head and a gentle and effective rotating action. It's battery operated and ready to use. Velvet Smooth? Intense Serum: with Hyaluronic Acid + Pentavitin? + Green Caviar has great benefits. Hyaluronic acid is known for its ability to retain more water than any other compound. Pentavitin? is known to bind keratin in the skin to hekp keep the skin's moisture balance.