What Do You Wear in a Hyperbaric Chamber? Essential Attire for Comfort and Safety

If you are preparing for a hyperbaric oxygen therapy (HBOT) session, one of the most common questions you might have is: What Do You Wear In A Hyperbaric Chamber? The answer is simpler than you think, but it carries significant implications for both comfort and safety. Unlike typical medical procedures, hyperbaric chambers require specific clothing to prevent fire hazards and ensure the therapy’s effectiveness. In this guide, we will explore the essential attire to wear during your treatment, answering What Do You Wear In A Hyperbaric Chamber with expert insights, practical advice, and strict safety protocols.

Understanding the environment inside a hyperbaric chamber is critical. The chamber is pressurized with pure oxygen, which increases oxygen levels in your blood to promote healing. However, oxygen-rich environments are highly flammable. Therefore, any clothing that can generate static electricity or poses a fire risk must be avoided. The primary goal is to choose attire that is fire-resistant, static-free, and non- restrictive, allowing you to relax comfortably during the session.

The Golden Rule: 100% Cotton or Hospital-Grade Attire

The most critical safety requirement is that all clothing worn inside a hyperbaric chamber must be 100% cotton. Synthetic materials like polyester, nylon, or blends can generate static electricity, which could ignite in the pure oxygen atmosphere. Hospital gowns made of cotton are the standard choice, as they are flame-retardant and designed for easy access if medical intervention is needed. Some chambers also provide cotton scrubs or loose-fit garments for clients. Never wear wool, spandex, or tights—these materials are strictly prohibited for safety reasons.

Footwear: Bare Feet or Cotton Socks Only

Footwear is another essential consideration. Standard shoes, sneakers, or slippers are not allowed because they trap debris or create static. The recommended practice is to enter the chamber with bare feet or wear 100% cotton socks. If you choose socks, ensure they are free of logos or synthetic stitching. Some facilities will provide disposable cotton slippers that cover the sole but still meet safety guidelines. Always confirm with your provider before your session.

Removing All Fire Hazards: Jewelry, Electronics, and Makeup

Before entering the chamber, you must remove all metallic items, jewelry, watches, piercings, and electronics such as phones or earbuds. These objects can cause sparks or interfere with the chamber’s pressurization. Similarly, makeup, lotions, hair products, and perfumes are prohibited. Many cosmetics contain alcohol or volatile compounds that become flammable in high oxygen environments. For the same reason, contact lenses and glasses are typically not allowed; most facilities offer protective masks or allow you to bring your own prescription glasses made of plastic frames and soft lenses—but always check with staff beforehand.

What About Undergarments?

If you are given a hospital gown, you can usually wear cotton underwear underneath. However, confirm with the technician whether certain bras or briefs made from synthetic blends