DaniPro Nail Polishes are made with Undecylenic Acid and are doctor formulated so you can achieve healthy, gorgeous looking nails. For best results, apply a base coat, then color, then a topcoat. DaniPro Nail Polishes are chip-resistant and come in an array of lively colors. All nail polishes are free of harmful chemicals that are often found in other nail polishes, such as formaldehyde, toluene, and DBP. DaniPro Infused Nail Polish offers a simple and healthy way to beautify nails.