Palo Santo — Explained by Medical Evidence, Not Myths

Palo santo is a fragrant wood traditionally burned or used as an essential oil, but current medical evidence does not support most popular health claims around it. For many people it is simply an aroma product, while for others it may trigger irritation, headaches, or breathing symptoms.

What palo santo is — and what medical evidence actually says

Palo santo usually refers to aromatic wood from Bursera graveolens, a tree native to parts of South America. It has long been used in cultural and spiritual practices and is now also sold as incense sticks, essential oil, room fragrance, and wellness products. Many people associate it with relaxation, cleansing, or stress relief.

From a medical perspective, palo santo is best understood as a scented natural product rather than a proven treatment. Some laboratory studies have examined compounds in palo santo, but lab findings do not automatically mean a product improves human health in real-world use. At present, strong clinical evidence is lacking for many popular claims such as detoxification, immune boosting, or treating anxiety and pain.

That does not mean every use is harmful or meaningless. Pleasant scents can affect mood, and simple rituals may help some people feel calmer. However, any perceived benefit is not the same as a medically established effect, and palo santo should not be used instead of professional care for ongoing symptoms or diagnosed conditions.

How people use palo santo

Palo santo is commonly used in three ways: burning the wood so it releases fragrant smoke, diffusing or applying diluted essential oil, and using it as an ingredient in candles, sprays, or personal care products. The experience can vary depending on the form, ventilation, concentration, and a person’s sensitivity to scents.

People often describe the aroma as woody, resinous, or citrus-like. In wellness spaces, it may be promoted for relaxation, focus, meditation, sleep, or energy cleansing. These uses are largely based on tradition, personal preference, and marketing language rather than high-quality medical evidence.

It is also important to separate palo santo from evidence-based stress management. Relaxation can come from many sources, including quiet breathing, mindfulness, sleep habits, and counseling. When stress, panic, low mood, or sleep problems are persistent, a clinician may look for causes such as anxiety disorders or other health conditions instead of assuming a fragrance product will solve the problem.

Possible benefits: what is plausible and what is unproven

The most reasonable potential effect of palo santo is sensory rather than disease-treating. A pleasant scent may support a calming environment, much like other forms of aromatherapy. Some people find that a familiar smell helps them unwind, especially when paired with a quiet routine, stretching, or meditation.

Researchers have studied aromatic plant compounds in general for possible effects on mood, inflammation, and microbes. Still, evidence specific to palo santo in humans remains limited. There is no reliable proof that it detoxifies the body, clears infections, cures headaches, boosts immunity, balances hormones, or treats chronic pain.

Claims about “purifying the air” should also be viewed carefully. While an aroma may make a room smell different, burning any organic material produces particles and gases. For people with sensitive airways, the smoke itself may be more relevant medically than any claimed cleansing effect.

When symptoms such as recurring wheeze, chronic cough, skin rash, or dizziness are present, they deserve proper evaluation. In some cases, doctors may assess related conditions such as asthma or contact reactions rather than attributing symptoms to general “toxins” or poor energy.

Risks, side effects, and who should be careful

Palo santo is not risk-free just because it is natural. Burning it creates smoke and small airborne particles that can irritate the eyes, nose, throat, and lungs. People with asthma, chronic bronchitis, allergies, sinus problems, or fragrance sensitivity may notice coughing, wheezing, chest tightness, throat irritation, or headaches.

Essential oil products can also cause problems. If applied directly to the skin without proper dilution, they may trigger irritation, redness, or burning. Fragranced oils may provoke allergic contact dermatitis in some individuals, especially those with eczema or sensitive skin. Ingesting essential oils is not recommended unless specifically directed by a qualified medical professional.

Some people are also more likely to react to strong scents in general. This includes those with migraines, pregnancy-related nausea, respiratory disease, or a history of sensitivity to perfumes, incense, and cleaning products. Children, older adults, and pets may be more vulnerable to indoor smoke and strong fragrances.

• Use caution if there is asthma, COPD, sinus disease, or recurrent wheezing.
• Avoid direct skin use of undiluted essential oils.
• Do not burn palo santo in poorly ventilated spaces.
• Stop using it if symptoms such as dizziness, rash, cough, or headache occur.

What doctors consider if symptoms happen after use

If a person develops symptoms after burning palo santo or using its oil, clinicians usually focus on irritation, allergy, or sensitivity rather than toxicity myths. The evaluation may depend on the symptoms. Breathing symptoms may suggest airway irritation, while a rash may point to contact dermatitis. Headache or nausea can occur with fragrance sensitivity or poor ventilation.

A doctor may ask when symptoms start, how long they last, whether they happen with other scented products, and whether there is a history of asthma, eczema, allergies, or migraine. In some cases, the issue is the smoke exposure itself rather than palo santo specifically. Similar reactions can happen with candles, incense, or other indoor burning products.

Testing is not always necessary, but it can be helpful in selected situations. For ongoing breathing complaints, clinicians may evaluate lung function. For persistent skin reactions, dermatology review or patch testing may be appropriate. If symptoms are significant, doctors may recommend treatment aimed at the reaction itself, such as allergy testing or specialist assessment.

Safer ways to use it and practical self-care

If someone chooses to use palo santo, the safest approach is to keep exposure brief and well ventilated. Open windows, avoid small enclosed rooms, and do not use it around infants, people with lung disease, or anyone who has already reacted to smoke or fragrance. A person should stop immediately if they develop coughing, throat irritation, headache, watery eyes, or dizziness.

For skin products, patch testing a small area first may reduce the chance of a larger reaction. Essential oils should not be applied near the eyes or on broken skin, and they should be kept away from children. Diffused fragrances are not automatically safer than smoke if a person is highly scent-sensitive.

People looking for relaxation may prefer lower-risk options that do not involve smoke, such as breathing exercises, quiet stretching, sleep routine improvements, or guided mindfulness. If symptoms such as poor sleep, shortness of breath, or persistent stress are affecting daily life, medical evaluation is more useful than trying multiple wellness products. Depending on the concern, care may involve lung function testing or support from a dermatology team when skin reactions are recurring.

When to seek medical care

Medical care is appropriate if symptoms are more than mild, keep coming back, or do not improve after stopping use. A person should speak with a doctor if palo santo seems to trigger repeated cough, wheezing, shortness of breath, chest tightness, facial swelling, a spreading rash, severe headache, or faintness. These symptoms may reflect an allergic reaction, airway irritation, or another health problem that needs attention.

Urgent care is especially important if there is trouble breathing, swelling of the lips or throat, severe dizziness, or rapidly worsening symptoms. These are not typical wellness effects and should never be ignored. Even if symptoms settle, follow-up can help clarify whether fragrance sensitivity, asthma, dermatitis, or another condition is involved.

For international patients who need evaluation, Acibadem International’s multidisciplinary specialists and JCI-accredited hospitals diagnose and treat respiratory, allergy-related, and skin concerns with evidence-based care. The most appropriate specialist depends on the symptoms, medical history, and examination findings.

Frequently asked questions

Is palo santo good for health?

Palo santo is not a proven health treatment. Some people enjoy the scent and may feel more relaxed, but strong medical evidence for specific health benefits is limited. It should not replace medical care for stress, pain, breathing problems, or infections.

Can palo santo smoke be harmful?

Yes, it can irritate the eyes, nose, throat, and lungs in some people. This is especially relevant for people with asthma, chronic respiratory disease, allergies, or fragrance sensitivity. Poor ventilation can make symptoms more likely.

Can palo santo cause allergies?

It can cause irritation or allergic skin reactions in some individuals, especially when used as an oil or fragranced product. Smoke exposure may also trigger respiratory symptoms that feel similar to allergies. A doctor can help determine whether symptoms are due to irritation, allergy, or another condition.

Is palo santo safer than other incense?

Not necessarily. Any product that is burned indoors can release particles and gases that irritate sensitive airways. A person's reaction depends on the amount used, room ventilation, and individual sensitivity.

Can pregnant people use palo santo?

Pregnancy can increase sensitivity to smells, nausea, and headaches, so caution is sensible. Because evidence on safety is limited, it is best to avoid heavy smoke exposure and discuss regular essential oil use with a qualified clinician. If it causes nausea, dizziness, or breathing discomfort, it should be stopped.

Should palo santo be used for anxiety or sleep problems?

It may create a calming atmosphere for some people, but it is not a treatment for anxiety disorders or chronic insomnia. If anxiety, panic, or poor sleep continues, professional evaluation is important. Effective care may include lifestyle changes, therapy, or medical treatment depending on the cause.

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.