Cosmo or Bullet Rounds.
Like a tuxedo, but for soap.

Cosmo Round Bottles

Cosmo or bullet round plastic bottles have a sleek profile that’s tall and narrow with gracefully sloped shoulders. From 2 ounces to 32 ounces, no matter what size, these bottles have a polished look that makes shampoos, lotions, and personal care products feel right at home. Their rounded shoulders give them a sleek, modern edge, and with plenty of sizes and colors to choose from, they clean up very nicely.