What Is Pepper Spray Made of? Causes, Explanations, and Next Steps

Pepper spray is usually made from capsaicinoids, the irritating compounds found in chili peppers, mixed with a carrier such as water, alcohol, or oil and delivered through a propellant or spray mechanism. Most exposures cause short-lived burning, tearing, coughing, and skin irritation that improve with prompt rinsing, but persistent breathing trouble, eye pain, or severe symptoms should be assessed by a doctor.

Overview: what pepper spray is made of

Pepper spray is most often made of oleoresin capsicum, a concentrated extract from hot peppers. The active chemicals are capsaicinoids, especially capsaicin and related compounds that create the familiar burning sensation of chili peppers. These ingredients are usually mixed with a carrier liquid, such as water, alcohol, or oil, and packaged in a spray device that releases a stream, mist, foam, or gel.

In many cases, pepper spray exposure is painful but temporary. People commonly develop burning of the eyes and skin, tearing, coughing, and a runny nose that gradually improve after the spray is removed and the area is rinsed. Even so, some symptoms deserve prompt medical attention, especially breathing difficulty, intense eye pain, vision changes, chest pain, or symptoms that continue despite first aid.

When a clinician assesses pepper spray exposure, the focus is usually practical rather than chemical. A doctor will ask what product was used, how long the exposure lasted, whether it affected the eyes or breathing, and whether the person has asthma, lung disease, contact lenses, or skin conditions. The exam may include checking the eyes, airways, lungs, and skin to rule out irritation severe enough to need treatment.

How pepper spray affects the body

Pepper spray works by activating pain and heat receptors in the body, especially the TRPV1 receptors found in the eyes, skin, nose, throat, and airways. This creates an immediate sensation of intense burning, even though the exposure is not the same as a heat burn. The body reacts by producing tears, blinking, mucus, coughing, and temporary closure of the eyes.

The eyes are often affected most strongly. People may experience tearing, redness, pain, light sensitivity, and a feeling that they cannot keep the eyes open. The skin may sting or feel hot, while inhalation can cause coughing, throat irritation, chest tightness, or shortness of breath. These effects are usually short-lived, but they can feel dramatic while they are happening.

Response can vary from person to person. Individuals with asthma or other breathing conditions may react more strongly, and people with direct eye exposure can sometimes develop corneal irritation or scratches from rubbing. In a few situations, doctors may assess related problems such as asthma flare-ups or eye surface injury if symptoms remain unusually severe.

Common symptoms after exposure

Symptoms usually begin within seconds to minutes. Eye symptoms often include burning, tearing, redness, blurred vision, light sensitivity, and involuntary eye closure. Nasal and throat symptoms may include a runny nose, sneezing, burning in the nose, hoarseness, and coughing.

Skin symptoms may include burning, redness, warmth, tingling, and irritation, especially on the face or in moist areas. If the spray is inhaled, some people notice chest tightness or wheezing. Nausea or a sense of panic can occur too, sometimes as a reaction to the pain and temporary inability to see clearly rather than to toxicity itself.

Most people improve with decontamination and time. However, symptoms can last longer if the product remains on the skin or clothing, if the eyes were rubbed, or if there was a high-dose exposure in a poorly ventilated place. Prolonged or worsening symptoms should not be ignored, particularly when vision or breathing is affected.

• Burning eyes and excessive tearing
• Redness of the skin or eyes
• Coughing, throat irritation, or a runny nose
• Chest tightness or wheezing, especially in people with asthma
• Temporary blurred vision or difficulty opening the eyes

What is in pepper spray besides capsaicin?

Although the main active ingredients come from peppers, pepper spray products are not all identical. Manufacturers may use different concentrations of oleoresin capsicum or purified capsaicinoids. The formula may also include inactive ingredients that help dissolve the extract, keep it stable, or determine how it sprays.

Common additional ingredients include solvents such as water, alcohol, or other carriers, along with propellants in aerosol products. Some formulations are delivered as fog, cone spray, stream, gel, or foam. These differences matter because a fine mist may be inhaled more easily, while a gel or foam may cling more to the skin or face.

It is also important to distinguish pepper spray from other crowd-control chemicals. Products such as tear gas or mixed irritant sprays may contain entirely different agents and can cause somewhat different symptoms. If the exact product is unknown, clinicians treat the exposure based on symptoms, the route of contact, and whether there are signs of eye injury, breathing compromise, or skin damage.

Immediate first aid and self-care

The first step is to move away from the source and into fresh air. Contaminated clothing should be removed carefully, and hands should be washed before touching the eyes or face. Rubbing exposed areas can worsen irritation and may spread the substance to other parts of the body.

For the eyes, gentle flushing with plenty of room-temperature water or saline is usually the safest first aid. Contact lenses should be removed if possible. For the skin, washing with mild soap and water is generally recommended, followed by clean clothing. Hot showers may intensify the burning at first, so lukewarm water is often more comfortable.

If coughing, wheezing, or chest tightness develops, breathing should be monitored closely. People who already use prescribed inhalers for conditions such as asthma should follow their clinician’s usual instructions. Persistent symptoms may require medical care, including an eye exam or support from specialists in pulmonology or ophthalmology when breathing or vision is affected.

When to seek medical care

Medical care is recommended if symptoms are more than mild or do not improve after basic first aid. Red flags include significant shortness of breath, wheezing that does not settle, chest pain, fainting, severe coughing, or exposure in someone with asthma, chronic lung disease, or heart disease. Children, older adults, and people exposed in enclosed spaces may also need closer assessment.

Urgent eye evaluation is important for severe pain, marked light sensitivity, persistent blurred vision, a feeling that something is stuck in the eye, or symptoms that continue after thorough rinsing. These features can suggest a corneal abrasion or ongoing inflammation. Doctors may use special dye and light to check the corneal surface and decide whether additional care is needed, including corneal care and treatment in rare, serious eye injuries.

A doctor may also assess the skin if there is significant swelling, blistering, or signs of secondary irritation. In hospital settings, clinicians focus on decontamination, breathing support when needed, pain relief, and evaluation for complications rather than on complex laboratory testing. For international patients who need assessment, Acibadem International’s multidisciplinary specialists in JCI-accredited hospitals diagnose and treat eye, skin, and respiratory effects related to irritant exposures.

How doctors diagnose and treat pepper spray exposure

Diagnosis is usually based on history and physical examination. Doctors ask when the exposure happened, whether it involved the eyes, skin, or inhalation, and what was done afterward. They also ask about medical conditions that can increase risk, such as asthma, chronic obstructive lung disease, eye disease, or sensitive skin. In most cases, blood tests or scans are not needed.

The examination usually focuses on breathing, oxygen levels, eye comfort and vision, and the condition of the skin. If eye symptoms are significant, the doctor may stain the eye to look for scratches or surface damage. If breathing symptoms are concerning, listening to the lungs and checking oxygen saturation can help guide whether observation or additional respiratory treatment is needed. In some cases, related symptoms may overlap with problems seen in chronic obstructive pulmonary disease.

Treatment is supportive. This may include continued irrigation of the eyes, skin cleansing, relief of airway irritation, and observation until symptoms improve. If there is an associated injury from falls, panic, or rubbing the eyes, that is treated separately. Most people recover without long-term effects, but follow-up is sensible if irritation lingers or vision and breathing do not return to normal.

Frequently asked questions

Is pepper spray made from real peppers?

Yes. The active ingredient in most pepper sprays comes from chili peppers, usually as oleoresin capsicum or purified capsaicinoids. These compounds cause the intense burning and irritation associated with exposure.

Is pepper spray poisonous?

In most situations, pepper spray acts mainly as an irritant rather than causing true poisoning. Symptoms are often short-term and improve with fresh air and rinsing, but severe eye or breathing reactions can still require medical attention.

How long do pepper spray symptoms usually last?

Many symptoms begin to improve within 20 to 60 minutes after decontamination, though some irritation can last longer. Eye discomfort, coughing, or skin sensitivity may persist for several hours, especially after heavy exposure or delayed rinsing.

What should someone do immediately after pepper spray exposure?

They should move to fresh air, avoid rubbing the eyes or skin, remove contaminated clothing, and rinse exposed areas with plenty of water. Contact lenses should be removed if possible, and symptoms should be monitored closely.

Can pepper spray damage the eyes permanently?

Permanent damage is uncommon, but it can happen if there is a corneal injury, severe inflammation, or delayed treatment. Persistent pain, blurred vision, light sensitivity, or trouble opening the eye should be assessed urgently.

Who is at higher risk of complications from pepper spray?

People with asthma or other lung disease may have more intense breathing symptoms. Children, older adults, and anyone exposed in a closed space or with direct eye contact may also need closer observation.

References

• American Academy of Ophthalmology
• Centers for Disease Control and Prevention
• MedlinePlus
• National Library of Medicine
• World Health Organization

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.