Everything You Need To Know Before Trying A Hammam Bubble Massage
The bubbles are created when the masseur dips a torba — essentially a pillowcase — into soapy water, fills it with air, and then squeezes it out over you, resulting in a mound of bubbles (via Infinite Walks). Then you get washed/massaged with the olive oil soap bubbles, and then rinsed with alternating hot and cool water with a final ice water rinse (from Fodor's Travel). You'll be left with baby soft smooth skin by the time it's all done.
If you've never been to a hammam before, there are some things to consider. Traditional hammams are public and generally separated by gender, and many guests will strip down entirely, so you can expect to see naked people around; however, if you're getting a hammam treatment at a spa or resort, there may be more modesty and privacy (via Around the World Beauty). And make sure you are hydrated before you go to a hammam; you'll be getting hot and sweating and you don't want to end up passing out (from Effe). Bring a change of underwear or a bathing suit along with flip flops, since you will get wet; you may be provided with sandals and a cover-up, but better safe than sorry!