8 BIAB nail trends for summer 2026: from sardine print to pastel french

BIAB (Builder in a Bottle), a gel formula applied directly to natural nails, is dominating the summer 2026 manicure trends. Unlike traditional gel polish, BIAB has a stronger formula that protects nails from breaking while delivering a natural look without acrylic extensions. Among the 8 trendiest looks of the season are sardine-print nails and pastel french manicure.