Chip-Free. Drama-Free. Relentless Polish. Lock in your look with the Caption system. Caption Base Coat primes nails, evens out ridges and fortifies natural nails to a healthy glow. Features: Primes and protects natural nails; Contains Nonychosine F which delivers strength and resilience to help weak and brittle nails; Evens out and fills ridges; Superior adhesion bond with Caption Nail Polish color; Optical brighteners fortify and rejuvenate natural nails; Round tip brush with 320 strands, follows curve of nails; Formulated without DBP, toluene, or formaldehyde.