When preparing for a hyperbaric oxygen therapy (HBOT) session, one of the most common questions is, “What to wear in a hyperbaric chamber?” The answer isn’t just about comfort—it’s about safety. In this ultimate guide, we’ll walk you through the essential clothing choices, from specialized hospital-provided garments to personal items you might consider. By the end, you’ll know exactly how to dress for a successful and safe treatment.
The Safety Priority: Why Clothing Matters in HBOT
Hyperbaric chambers simulate increased atmospheric pressure, which amplifies fire risks. In high-oxygen environments, synthetic materials like polyester, nylon, and spandex can generate static electricity or even melt, causing severe burns. Therefore, the golden rule is 100% pure cotton or hospital-approved gowns. Cotton is naturally static-free and breathes well under pressure. Always check with your clinic’s guidelines, but the safest bet is to wear nothing that contains synthetics, zippers, or metallic threads.
Common Items Allowed (and Prohibited) in the Chamber
Allowed: Loose-fitting, 100% cotton t-shirts and sweatpants, cotton socks (no compressors), and cotton underwear. Some clinics provide special “chamber gowns” or scrubs, which are your best choice.
Prohibited: Jewelry, watches, batteries (including hearing aids), makeup, deodorant, hairspray, or any electronics. Even petroleum-based creams like Vaseline are risky because they can trap oxygen and ignite. Strip before your session—most clinics will ask to remove everything except essential clothing for safety rules, as the chamber’s environment is strictly controlled to eliminate spark sources.
For a deeper breakdown of personal comfort choices, explore our resource on What To Wear In A Hyperbaric Chamber—it details item-by-item recommendations from HBOT veterans.
Footwear and Headgear: Don’t Overlook These Details
You won’t wear shoes inside—they often contain synthetic soles and metal eyelets. Instead, clinics provide cotton slippers or allow bare feet. For headgear, avoid wigs, hats, or headbands with clips, as static can build up in hair. If you have long hair, tie it up with a simple cotton hair tie (no metal). Avoid using any hair product, as mentioned earlier. The key is keeping everything natural and loose to prevent trapping oxygen against your skin.
Temperature Management Under Pressure
Hyperbaric chambers can feel warm due to compression. Choose light, breathable layers: a cotton T-shirt and shorts are ideal for most sessions. If you tend to feel cold (common during treatment), bring a 100% cotton jacket or blanket provided by the clinic. Avoid fleece or polyester blends—they may be cozy but break safety rules. If you’re unsure, ask facility staff: they’re trained to guide patients on physical comfort while staying fire-safe. Remember: no skipping layers—your skin needs protection from condensation inside the chamber.
Can You Wear Contact Lenses, Glasses, or Eyewear?
Standard glasses are generally not allowed because frames often contain metal components. Some clinics permit specialized “chamber-safe” goggles (plastic frames) but confirm ahead. Contact lenses are usually prohibited due to dehydration risk or friction under