Happiness Nails in Chula Vista operates from 868 Third Avenue on the southern portion of the Third Avenue corridor, providing acrylic nails, gel manicures, pedicures, waxing, and custom nail art alongside a mobile nail service that travels to client locations. The mobile offering distinguishes Happiness Nails from fixed-location competitors, extending salon-quality acrylic and gel work beyond the storefront — a flexible model that complements the walk-in volume at Maile's Nails farther north on Third Avenue. In-salon services cover standard and spa-tier pedicures, full-set acrylics, gel polish, and freehand nail art on natural or extended nails. The Third Avenue address places the salon within the same grooming cluster that includes Kutthroat Third Avenue, giving households a walkable circuit for nail care and men's fades on the same block. Acrylic full sets are built using a liquid monomer-and-powder polymer system applied over nail forms or tips, with each extension shaped to client-specified length using 100-grit and 180-grit hand files before a final topcoat seal.