Take your natural nails to salon-level with this Natural Base Coat. This expert formula is designed to provide the ultimate base for any OPI nail polish, promoting a long-lasting, chip resistant manicure with up to 7 days of wear. Creating a protective layer on nails, this high-performance base coat acts as a nail strengthener or natural nail polish for clear nails and prevents stains from darker shades and grips nail polish for a longer-lasting, chip resistant manicure.