"Salt water has fewer toxins, it's softer on skin and it won't cause red eyes, itchiness or green hair!" says Whitman, who used
True Blue Pools for Alba's pool, at left. Another reason the designer is a big fan: "The salt keeps pools clean and algae-free without chemicals, as these systems clean and monitor themselves." While they may cost more upfront, Whitman says they require much less maintenance and you're not paying for chemicals.