- Best-selling and award-winning Super Skinny® Shampoo smoothes and softens hair, making difficult strands softer and more manageable. The Super Skinny Complex and mild surfactants work to thoroughly cleanse hair without stripping or plumping while reducing drying time. Hair is left gorgeous and easy to style. This product is paraben free, gluten free, vegan, and color safe. Apply a small amount. Massage. Rinse.