Citrusy and salty. Polo Ultra Blue by Ralph Lauren is a new. fragrant fragrance for men that was introduced in 2018. Fresh lemon verbena. spicy green basil. fragrant citron. and tangy lemon are the top notes. With a base of salt. sensual musk. and woody notes. the center heart notes are a distinctive blend of sweet musky ambertone and mineral notes. This mild citrus aroma makes this cologne perfect for summer daytime wear. whether you're lounging by the pool or working.