THESE are the generations of cosmetic medicine:

First came the “medical spa,” or medi spa, offering dermatology services in a retail setting. The medi spa begat the dental spa, bringing tooth bleaching to storefronts nationwide. The dental spa begat the podiatry spa.

And now comes the first medi spa in Manhattan wholly dedicated to strengthening and grooming a woman’s genital area. Phit  short for pelvic health integrated techniques  is to open this month on East 58th Street.

Dr. Lauri Romanzi, a gynecologist who performs pelvic reconstruction surgery, said she came up with the idea for the spa one day while walking by an outlet of BriteSmile, the tooth-whitening chain. She liked that the stores cater to people with healthy teeth.

So Dr. Romanzi developed her own concept of “pelvic fitness” for healthy women. She said that Phit (www.theperfectphit.com) will help women get “in shape from the inside out.”