Sally Hansen nail art pen makes nail art easy. A unique pen and fast-drying formula allows anyone to "design and go". Create nail designs over any nail color. The fine-tip pen makes it easy to control and draw precise lines for a french manicure. The mistake-proof formula can be removed or corrected with a moist cotton swab without damaging dry nail polish. The water-based formula. Nail art pens are great for french pedicure tips too. Available in 8 designable shades.