NARS Precision Lip Liner is a highly pigmented matte lip liner available in 26 shades. It is designed to create shape, definition, and various lip effects with laser-focus precision. The product is available in wooden, sharpenable pencil form that glides on smoothly and provides a moisturizing formula that saturates with budge-resistant color. The positive aspects of the product include its highly pigmented color, moisturizing formula, and precise application. The negative aspects of the product are not mentioned in the search results. The ingredients or materials used in the product are not mentioned in the search results.