DR Liquid Calcium is for stronger and longer nails. Daggett & Ramsdell Liquid Calcium Base Coat. Calcium-rich moisturizing formula provides a perfect foundation for your polish. Helps smooth unevenness and ridges so that polish goes on smoothly and evenly and allows polish to adhere better. Acts as a barrier to prevent polish color from staining your nails. Can be used alone for a lasting gloss finish. Works inside and out for stronger, longer, more attractive looking nails.