What it is:A designer tool for adding the signature, Christian Louboutin red shade to the underside or surface of nails. What it does:Transform your nails into art objects with Loubi Under Red. The fine, felt-tip pen applicator lets you subtly add Louboutin’s signature red color to the underside of your nails or boldly to your nail surfacesimilar to the designer’s coveted red soles. This nail color travels to the tip without saturating it, giving you the control and ease to create your own designs. A polish with a long-wearing, chip-resistant formula, it delivers luxe, glossy color in one coat and immense shine in two coats. Its unique applicator can be used as an art brush and a dotting tool to coat on color to the underside of nails and to paint designs on top of nails.