Essie Nail Polish - Salt Water Happy 374: A sugar-sweet atlantic blue for perfectly polished nails. Indication Nail polish. How to Use Step 1: Remove nail polish, cleanse and sanitize hands Step 2: Trim and file nails Step 3: Get your cuticles in shape! Step 4: Exfoliate the nail, trim, hydrate + moisturize Step 5: Apply your base coat Step 6: Apply 2 coats of Essie color Step 7: Finish with a top coat