Putting castor oil in your belly button is unlikely to do much beyond moisturizing the skin in that area. The practice comes from an Ayurvedic tradition called Nabhi Chikitsa, or navel therapy, and has gained popularity on social media with claims about digestion, detoxing, weight loss, and pain relief. None of these claims are supported by clinical evidence.
Where the Practice Comes From
Navel therapy is rooted in Ayurvedic medicine, where the belly button is considered a central energy point in the body. The modern version of this practice often references something called the “Pechoti gland,” described as a structure behind the navel connected to thousands of blood vessels that can absorb oils and deliver their benefits throughout the body.
There is no scientific evidence that the Pechoti gland exists. While the umbilical cord did connect to major blood vessels before birth, those vessels close off and become ligaments after the cord is cut. Your belly button in adulthood is essentially a scar with skin over it, not a portal to your circulatory system.
What Actually Happens at the Skin Level
The skin inside and around the navel is genuinely different from skin elsewhere on your body. Research published in the journal Pharmaceutics found that umbilical skin has a thinner outer barrier (the stratum corneum), different lipid composition, and fewer of the proteins that normally act as gatekeepers between skin cells. This means substances can penetrate navel skin faster and in greater amounts than through skin on, say, your forearm.
That sounds like it supports the practice, but the reality is more nuanced. Castor oil’s main active component, ricinoleic acid, doesn’t absorb well through skin in general. Research from CDC-affiliated toxicology studies found that less than 0.4% of ricinoleic acid applied to skin made it into deeper tissue over eight hours. Up to 16% stayed trapped in the outermost skin layer, the stratum corneum, without going further. Even with the navel’s thinner skin, the amount reaching your bloodstream from a few drops of oil would be negligible.
So while the navel does absorb slightly more than other skin areas, “more” in this case still means a tiny fraction of what you’d need for any systemic effect on digestion, inflammation, or anything else happening inside your body.
The Claims vs. the Evidence
Promoters of belly button oiling claim it can improve digestion, reduce bloating, relieve menstrual cramps, help with weight loss, detoxify the body, and even reduce symptoms of endometriosis or ovarian cysts. These claims are entirely anecdotal.
Castor oil taken orally is a well-established laxative. When you swallow it, ricinoleic acid interacts directly with receptors in the intestinal lining, triggering muscle contractions that move stool along. This mechanism requires the oil to physically contact the inside of your gut. A few drops sitting on your navel skin cannot replicate this. No clinical trials have tested or confirmed any benefit from applying castor oil to the belly button for digestive issues, menstrual pain, or any other condition.
The anti-inflammatory properties of castor oil are real, but they’re local. When applied to skin, it can reduce redness and irritation in that spot. This is useful for chapped lips or dry patches, but it doesn’t translate to reducing inflammation in your uterus, intestines, or ovaries through navel application.
Is It Safe?
For most people, putting a small amount of castor oil in the belly button is harmless. Castor oil is widely used in skincare and is generally well tolerated. That said, there are a few things to keep in mind.
- Allergic reactions: Some people develop contact dermatitis from castor oil. Test a small amount on your inner wrist first and wait 24 hours before applying it to your navel.
- Infection risk: The belly button is a warm, dark, moist environment where bacteria and fungi already thrive. Adding oil regularly can feed that environment if you’re not cleaning the area well. If you notice redness, swelling, discharge, or a foul smell, stop and let the area dry out.
- Essential oil irritation: Some people mix castor oil with essential oils like tea tree or peppermint before applying it. Undiluted essential oils can cause burning or irritation, especially in a sensitive area like the navel. Always dilute them in a carrier oil first.
- Pressure sensitivity: There’s a dense concentration of nerves around the navel and gut area. Pressing too hard during application can cause discomfort or pain.
Why It Might Feel Like It Works
People who swear by this practice aren’t necessarily making things up. The gentle massage involved in applying oil to your abdomen can stimulate digestion and relieve gas on its own, completely independent of what oil you use. Abdominal massage has some evidence behind it for improving constipation and reducing bloating. The warmth and ritual of a nightly self-care routine can also reduce stress, which directly affects gut function and menstrual pain. If you find it relaxing and it seems to help, the benefit is likely coming from the massage and the relaxation, not from the castor oil absorbing through your navel.
There’s also a strong placebo component. When you expect something to work and pay close attention to your body afterward, you’re more likely to notice improvements that were already happening or would have happened anyway. This doesn’t mean the experience isn’t real to you, but it does mean the oil itself probably isn’t the cause.
What Castor Oil Can Actually Do
Castor oil has legitimate uses, just not through the belly button. Applied topically to skin, it works as a thick moisturizer that helps seal in hydration. Some people use it on dry cuticles, rough patches, or as part of an oil-cleansing routine for the face. Taken orally in small amounts, it’s an effective short-term laxative, though it can cause cramping and shouldn’t be used regularly without guidance. It’s also been used in clinical settings to help induce labor, though this is done under medical supervision because of its strong effect on smooth muscle contractions.
If you’re looking for the skin-softening benefits, applying castor oil to the actual dry area will be more effective than routing it through your navel. And if you’re dealing with constipation, bloating, or menstrual pain, those are worth addressing directly rather than relying on a method with no evidence behind it.