A float tank, also known as a sensory deprivation or isolation tank, is an enclosed environment containing a shallow pool of water heated to skin temperature, typically 93.5 degrees Fahrenheit. This water is saturated with hundreds of pounds of Epsom salt (magnesium sulfate), creating extreme buoyancy that allows the body to float effortlessly. The purpose of this environment is to minimize external stimuli like light, sound, and gravity. Optimizing the float session for maximum relaxation and sensory removal depends heavily on the choices made regarding attire.
The Standard Approach: Floating Without Clothing
Most float centers recommend floating nude to fully maximize the experience of sensory deprivation. Any item touching the skin, such as clothing seams or elastic bands, can become a distracting sensory input, interfering with the goal of complete sensory cutoff. Wearing clothes can also disrupt the precise temperature balance calibrated to the outer layer of the skin, creating noticeable temperature differences where the fabric clings. Floating nude ensures the body is uniformly exposed to the dense magnesium sulfate solution. Garments absorb the saltwater, which creates drag, slightly reduces buoyancy, and increases the risk of wicking highly concentrated salt water toward the face or eyes.
Alternatives for Comfort: If Clothing is Necessary
While nudity is encouraged for optimal results, wearing minimal clothing is acceptable if personal comfort is prioritized, as private float rooms ensure complete solitude. Acceptable garments should be clean, lightweight, and free of unnecessary bulk, such as zippers or ties. A simple, form-fitting swimsuit, like a two-piece bikini or brief-style trunks, is the best compromise. Heavy or loose materials, such as cotton shirts or board shorts, are highly discouraged because they absorb an excessive amount of the saturated salt solution. This salt retention adds weight and drag, creating a greater tactile distraction against the skin.
Pre-Float Preparation and Post-Float Attire
Proper preparation begins before entering the tank with a mandatory cleansing shower. This step removes contaminants like body oils, makeup, deodorants, and lotions, which compromise the cleanliness of the float solution. Guests must also remove all accessories, including jewelry, watches, and hair clips, as the salt water can damage metals and cause distraction. Removing contact lenses is also advised before the float, as the salt water can cause severe irritation if it gets into the eyes.
For the trip to and from the facility, wearing loose, comfortable clothing is highly recommended. After the session, the high concentration of salt leaves a residue, even after the post-float shower. Soft, non-restrictive items, such as sweatpants or simple cotton wear, are much more comfortable to put on than tight athletic gear or denim.