Lush’s new bath bomb, Geo Phyzz, has a decidedly Islands slant. Plop it in a bathtub filled with warm water, and like a giant Alka-Seltzer, it will release Hawaiian sea salt, seaweed and red clay from Molokai, noted for its high iron content. The Phyzz is supposed to relax muscles and revitalize skin, but the scents—from the oils of cypress, sandalwood and pine—make it perfect for treating a cold, too. The bath bombs are $6.95 each, at Lush stores. Royal Hawaiian Shopping Center, 923-5874 or Ala Moana Center, 941-7400.