HOCATT (Hyperthermic Ozone and Carbonic Acid Transdermal Therapy) packs ozone, carbonic acid, far-infrared heat, steam, oxygen, photon light, and electrotherapy into a single 30-minute session inside a sit-down chamber. At iVitality MD in Tomball, Dr. Bismah Irfan uses HOCATT as part of personalized protocols for chronic fatigue, autoimmune conditions, mold and Lyme recovery, post-COVID symptoms, and long-term detox support for patients across the greater Houston area.
What HOCATT Therapy Is
HOCATT is a 10-in-1 wellness chamber developed for clinical and longevity practices. You sit inside the unit with your head above the lid — there is no enclosed steam over your face. Once sealed, the chamber pulses ozone, CO2, far-infrared heat, and steam against the skin while you breathe pure oxygen through a tube. The combination raises core temperature, opens pores, and pushes ozone deep into the bloodstream through transdermal absorption rather than inhalation, which is the safer delivery route.
Most patients book HOCATT as a recurring part of an integrative plan — alongside IV infusions, NAD therapy, or peptide protocols — rather than as a one-off detox session. The therapy is often added to recovery work for chronic illness, but a meaningful share of our HOCATT clients use it for longevity, athletic recovery, and stress regulation.
The reason transdermal absorption matters: ozone is therapeutic but it is also a respiratory irritant if inhaled directly. HOCATT solves that by sealing the chamber at the neck and giving you a separate line of pure oxygen to breathe. The ozone-CO2-steam mixture only contacts skin, which is the route the body handles well. This is the same logic behind major autohemotherapy and rectal ozone insufflation — bypass the lungs, get the systemic benefit.
The 10 Modalities in a Single HOCATT Session
HOCATT bundles ten separate wellness therapies into one 30-minute visit. Each modality runs in a specific sequence — the order matters, since steam opens the skin so ozone can absorb properly, and the cool-down phase lets the body integrate the heat load.
- Ozone steam sauna — medical-grade ozone is delivered transdermally for circulation, oxygenation, and microbial support.
- Transdermal carbonic acid (CO2) — relaxes vascular smooth muscle and improves peripheral blood flow.
- Far-infrared heat — penetrates several inches into tissue and supports sweat-based detox at lower ambient temperatures than a traditional sauna.
- Steam sauna — humid heat opens pores and primes the skin to absorb ozone and CO2.
- Pure oxygen breathing — delivered through a separate tube so you inhale concentrated O2, not ozone, throughout the session.
- Photon and color light therapy — visible light wavelengths used to support mood, circadian rhythm, and skin tone.
- Frequency-specific microcurrent (electrotherapy) — low-level current applied through hand and foot contacts to support cellular ATP production.
- Whole-body vibration — gentle motion plate that supports lymphatic flow during the session.
- Aromatherapy and essential oils — dispersed through the steam to add a calming or activating dimension to the protocol.
- Cool-down phase — final minutes bring core temperature back down and finish the autonomic reset.
What a HOCATT Session Looks Like
You arrive about ten minutes early, change into a towel, and step into the chamber. A trained member of our team adjusts the seat height, gives you the oxygen-breathing tube, hand and foot electrodes for microcurrent, and seals the chamber around your neck.
The first eight minutes are a steam warm-up that opens the pores. Ozone is then introduced for the central twenty minutes — this is where most of the transdermal absorption happens. You will sweat, sometimes heavily, and your heart rate gently rises the way it would during light cardio. The chamber finishes with a CO2 phase and a cool-down. Total time in the unit is usually 30 minutes; with check-in and shower the full visit runs about 45 to 60 minutes.
Most patients describe the experience as warm and energizing rather than uncomfortable. The chamber stays open at the top so there is no claustrophobic enclosure and you can step out if you need to.
Conditions HOCATT Supports
HOCATT is most often added to protocols for patients dealing with stubborn, multi-system symptoms — situations where standard testing is unremarkable but the patient still feels chronically unwell. We commonly use it for:
- Chronic fatigue and post-viral fatigue
- Autoimmune conditions, including Hashimoto’s and rheumatoid presentations
- Mold and biotoxin illness — see our background on mold toxicity and bladder symptoms
- Lyme disease and chronic tick-borne infections
- Post-COVID symptoms, including brain fog and fatigue
- Chronic inflammation and oxidative stress
- Detox support — heavy metals, environmental toxin load, hormonal clearance
- Weight management as part of a broader metabolic plan
- Skin clarity and tone — pairs naturally with our work on skin health from the inside out
- Athletic recovery and longevity protocols
HOCATT is not a replacement for diagnostic workup or for primary care. Dr. Irfan will only recommend it once she has reviewed your history, lab work, and current medications.
HOCATT in Tomball, Spring, and Greater Houston
Our HOCATT chamber is at the iVitality MD clinic in Tomball, Texas. Patients regularly drive in from Spring, The Woodlands, Cypress, Magnolia, Conroe, Katy, and central Houston — there are very few HOCATT units in the Houston metro, so traveling 30 to 60 minutes for a session is normal.
Most Houston-area patients pair HOCATT with other services we offer in-clinic: IV ozone, NAD infusions, peptide protocols, or PEMF and BrainTap for nervous-system recovery. If you are visiting from out of town for a focused recovery week, our team can sequence two HOCATT sessions plus IV therapy into the same day.
HOCATT is not currently covered by commercial insurance plans in Texas; we treat it as a self-pay wellness service. Patients with HSA or FSA accounts can often use those funds toward sessions — Dr. Irfan or our front desk team can write the documentation you need to submit. Single sessions, packages, and membership cadences are available; the front desk will walk you through current pricing during your consultation.
Sessions, Frequency, and What to Expect
The number of sessions depends on what you are working through. For chronic illness or detox protocols, most patients start with two to three sessions per week for four to six weeks, then shift to a maintenance cadence of one to two sessions per month. For longevity, recovery, or general wellness use, one session per week or every other week works for most people.
Many patients feel energized and clear-headed after the first session. Sustained changes — better sleep, more stable energy, less brain fog, improved skin — typically show up across the first six to eight sessions. Dr. Irfan will reassess your plan at that point and decide whether to keep frequency the same, change protocols, or layer in another therapy.
Preparing for Your HOCATT Visit
A few habits make the session more comfortable and more effective:
- Drink at least 16-24 ounces of water in the two hours before your visit and bring water with you.
- Avoid heavy meals for two hours before the session. A light snack is fine.
- Skip lotions, perfumes, and deodorants the morning of — they interfere with ozone absorption.
- Wear comfortable, loose clothing you can change out of easily.
- Bring a change of clothes if you have plans after; you will likely want a quick shower.
- Allow about 15 minutes after the session to rest, rehydrate, and let your heart rate settle before driving.
Possible Side Effects
HOCATT is well tolerated by the large majority of patients. When side effects occur, they are usually short-lived and reflect the body responding to the therapy rather than reacting against it. The most common are:
- Mild fatigue after the first one or two sessions
- Brief lightheadedness right after the cool-down
- A temporary increase in urination
- Mild detox symptoms — headache, transient muscle aches — usually resolving within 24 hours
Dr. Irfan screens every new patient for the standard HOCATT contraindications (pregnancy, active hyperthyroidism, severe cardiovascular disease, recent organ transplant, and a few others) before clearing you for a session. If you are unsure whether HOCATT is appropriate for you, the safest first step is a consultation.
HOCATT therapy is part of an integrative medical practice and is not intended to diagnose, treat, cure, or prevent any disease. These statements have not been evaluated by the FDA. Always discuss new therapies with Dr. Bismah Irfan before starting.