Castor Oil In Your Belly Button: What Actually Happens
Quick question.
If a tiny dent in your tummy could balance your hormones, calm your digestion, clear your skin and sort out your period…
Wouldn’t someone have mentioned it before TikTok?
And yet here we are. Thousands of people are warming up a bottle of castor oil and pressing a few drops into their belly button, hoping for all of the above.
It’s easy to see why it caught on. It costs next to nothing, it takes about a minute, and it feels like you’re finally doing something for your body.
Here’s the catch.
Your belly button is a scar. That’s all it is. It’s what’s left of the cord that once fed you before you were born.
So how exactly is a scar meant to reach your hormones?
That’s what this post sorts out, without the hype and without making you feel silly for being curious.
Because some of it holds up. Quite a lot of it really doesn’t.
And the strangest fact about your belly button isn’t in any of the videos. (It involves a rainforest.)
I’m Patri Hernández, a certified organic skincare formulator and dermocosmetic technician with a background in health coaching. I specialise in natural skincare, botanical ingredients and practical, evidence-informed approaches to natural wellness, which includes checking what a trending oil can and can’t do.
Some links in this post may be affiliate links, which means I may earn a small commission if you buy through them, at no extra cost to you. This never influences what I recommend, and I only suggest things I genuinely believe may be useful.
What you’ll know in five minutes, and what you can stop buying
Here’s what you’ll get out of this post:
- A straight verdict on every big claim. Hormones, digestion, your cycle, “detox” and weight loss, each sorted into supported, plausible, traditional or unsupported.
- Money saved. If you were about to buy a special oil or kit marketed for this, you’ll know what to check first. A small bottle of plain cold-pressed castor oil is all you’d need.
- Time saved. A simple routine that includes the one part with some backing (belly massage) and skips the guesswork.
- Safer use. How to patch test, keep the area clean, who should skip it, and the signs that mean a doctor is a better use of your evening than another oil.
- Better options for the real problem. If you’re after relief from constipation, bloating, cramps or dry skin, you’ll see what has stronger evidence.
Where the belly button idea comes from
Navel oiling is linked to Ayurvedic traditions, where oils are applied to the belly button and the skin around it. Putting oils on the body is an old habit in many cultures, so the practice itself isn’t new. Social media simply gave it a fresh audience and a catchy name: navel pulling.
The online version is usually simple. Warm castor oil, a few drops in the navel, a gentle massage.
Then comes the explanation, and this is where things wobble. You’ll often hear that a “Pechoti gland” sits behind your navel and connects to the rest of your body.
There is no evidence that this gland exists. Healthline’s look at the topic puts it simply: the anatomy of a belly button is far simpler than the videos suggest.
Wow: your navel is closed for business. Before birth, a thin tube runs from your bladder to your belly button. After birth it normally shuts and turns into a fibrous cord, so there is no open channel under your navel.
In rare cases the tube doesn’t close fully, which is why doctors describe it in case reports. It’s also one reason a discharge, swelling or pain around the navel always deserves a proper check.
Castor oil itself is very old. A medical text from ancient Egypt, dating to around 1550 BC, lists it as a laxative, and for eye and skin problems, and to bring on labour.
Notice the pattern. The use with real science behind it is still the one where you swallow it.
Wow: a rainforest in a dent. In 2012, ecologists swabbed 60 belly buttons and found 2,368 types of bacteria. Most navels held around 67 types, but one had as few as 29 and another as many as 107.
The researchers compared the mix to a rainforest. National Geographic reported on the study. Many of these are ordinary skin bacteria, but it’s still a good reason to wash the area before putting anything into it.
What people claim, and how it holds up
Here’s how the big claims stack up. I’ve sorted them by the kind of evidence behind them, because “people say so” and “studies show so” are very different things.
| Claim | What the evidence says | Verdict |
|---|---|---|
| Balances hormones | No studies show that oil on the navel changes hormone levels. | No evidence |
| Regulates your cycle | Nothing in the research supports this. If your cycle is irregular, a GP check matters far more than any oil. | No evidence |
| Eases bloating and constipation | Oil you swallow is a laxative. Oil on the skin is a different thing. Gentle belly massage has some backing. | Unproven for navel oil |
| “Detoxes” the body | “Detox” has no clear medical meaning here. Your liver and kidneys already do that job. | No evidence |
| Helps with weight loss | Nothing supports it. Castor oil by mouth is a laxative, which is not the same as losing fat. | No evidence |
| Moisturises the skin | Castor oil is a good, heavy emollient for the skin it touches. | Supported, but only locally |
What the evidence supports, and what it doesn’t
Here’s something worth knowing. When Healthline searched the scientific literature for “navel pulling” and “castor oil belly button”, it found nothing.
Not a weak study. No study.
So everything below is borrowed from related research, and I’ll tell you when that’s a stretch.
Why castor oil works when swallowed but not through your navel
When you swallow castor oil, enzymes in your small intestine release a fatty acid called ricinoleic acid. It makes up around 90% of the oil.
That acid switches on receptors (called EP3) on the muscle cells of your gut wall, which makes the gut contract. That’s the laxative effect.
The same receptors sit in the uterus, which is why castor oil by mouth can start contractions and why it’s a firm no in pregnancy. This was worked out in mice, which I don’t support, so I’m only sharing the finding because it explains so much. You can read the study here.
Oil on your belly button never reaches that gut wall. Experts quoted by Prevention Australia say the same: it isn’t going into your gut.
Wow: even the scientist behind this research wouldn’t recommend it. Stefan Offermanns, who helped show how castor oil works, told National Geographic he probably wouldn’t recommend it as a laxative.
His reason: there are more effective laxatives with fewer side effects, such as nausea and vomiting. Read his comments here.
The one study people point to
If you’ve seen someone claim that castor oil on the belly helps constipation, they’re probably thinking of a small study in two nursing homes in Turkey.
Older adults wore castor oil packs, which are cloths soaked in oil and placed on the abdomen. It didn’t change how often people went or how much, but it reduced straining and eased some symptom scores.
That’s interesting, but it’s a long way from a few drops in a navel. The packs covered a large area, the group was small and older, and people were compared with themselves before, during and after.
A study like that can’t separate the oil from the touch, the warmth and the routine.
Why some people still feel better
Here’s the part I find most useful. Massage has better backing than the oil.
A systematic review of randomised trials found that abdominal massage reduced constipation symptoms, increased how often people went to the loo and improved quality of life. In several trials, massage was added to laxatives rather than replacing them.
Wow: the massage in those trials wasn’t a quick rub. A separate review of abdominal massage trials in adults with chronic constipation found that sessions were typically daily and lasted 15 to 20 minutes. Here’s the review.
A minute of dabbing oil into your navel is a very different thing.
Warmth and a few quiet minutes may help too, especially if stress tends to land in your tummy. That’s plausible, though it hasn’t been proven for navel oiling.
Established, plausible, traditional and unsupported
Here’s the whole picture in one place:
- Established: castor oil by mouth is a laxative, and castor oil is a good emollient for the skin it touches.
- Plausible: belly massage may ease constipation symptoms, and warmth and relaxation may ease tummy tension.
- Traditional: navel oiling in Ayurvedic practice.
- Not supported: hormone balance, cycle regulation, detox, weight loss and the “Pechoti gland”.
If you want to try it anyway
I’m not here to tell you what to do with a bottle of oil. Used sensibly, it’s unlikely to harm most people, although Healthline points out there’s little research on the risks either way.
Here’s how to keep it as low-risk as possible.
What you need
- A small bottle of cold-pressed castor oil. You only need a few drops, so a small bottle goes a long way.
- A glass dropper bottle if you’d like to control the amount.
- Cotton pads, mild soap and water.
- Optional: a lighter oil such as jojoba oil, if castor oil feels too thick or sticky.
Castor oil is easy to get wrong. My post on using castor oil the wrong way covers the common mistakes, including why swallowing it without medical advice is a bad idea.
How to do it
- Patch test first. Put a small amount on your inner elbow and wait 24 hours. Any redness, itching or swelling means you should skip it.
- Clean the area. Wash your hands, then clean your belly button with mild soap and water and dry it well.
- Warm the oil. Rub three to five drops between your fingers. It should feel comfortably warm, never hot.
- Apply a few drops. Dab it on the navel and the skin around it. Don’t pack oil deep inside.
- Massage your belly. Use slow, gentle circles, clockwise, which follows the direction of your large intestine. This is the part with the most going for it.
- Wipe off the excess. A cotton pad does the job.
- Wash the area later. Do this the same day, so oil, sweat and bacteria don’t sit in the dent overnight.
I’d skip the “cotton ball in the navel overnight” method you may see online. There’s no evidence it adds anything, and warm oil left in a spot that already holds plenty of bacteria is asking for irritation.
Common mistakes
- Using too much. More oil means more mess, not more effect.
- Skipping the cleaning. Trapped oil and dirt in a deep navel can lead to irritation or infection.
- Using it on a fresh piercing, a rash or broken skin. Don’t.
- Pressing on a bulge. A lump or tender spot near your navel could be a hernia. Get it checked before massaging.
- Mixing it with strong essential oils. The Cosmetic Ingredient Review safety assessment notes that castor oil can increase how well other chemicals penetrate skin, so strong ingredients may hit harder.
- Using old oil. If it smells sharp or rancid, bin it.
- Swallowing it to “go with” the trend. It’s a powerful stimulant laxative and can cause cramps and dehydration.
How often
There’s no tested schedule, because there are no trials. If you enjoy it, keep it occasional and let your skin set the limit.
Stop at the first sign of redness or itching.
Who should skip it
- Anyone pregnant or trying to conceive. Castor oil by mouth can start labour, and safety on the skin during pregnancy hasn’t been established.
- Anyone with a known allergy or a history of reactions to castor oil.
- Anyone with unexplained tummy pain, swelling or a change in bowel habits. That needs medical attention, not oil.
- Anyone with a fresh navel piercing, rash or broken skin.
See a doctor if your navel becomes red, swollen, painful, leaky or smelly. Most of the time it’s a simple infection, but it’s not something to oil over.
Alternatives with better backing
If you came here hoping to fix something specific, these have a stronger case behind them:
| Your goal | What has better backing |
|---|---|
| Constipation | Fibre-rich foods (such as flaxseed), enough fluids, regular movement and gentle daily belly massage. Ask a pharmacist about gentle laxatives, and see your GP if it lasts. |
| Bloating | A food and symptom diary to spot triggers. If it’s persistent, ask your GP about IBS. |
| Period cramps | Heat on the lower abdomen, such as a heat pad or hot water bottle. See your GP if the pain is severe or new. |
| Irregular cycle | A GP check. There are many possible causes, and none are fixed by oil. |
| Dry skin on your tummy | Any emollient you like. Castor oil is thick, and lighter oils such as jojoba often feel nicer to wear. |
| Stress-related tummy tension | Slow breathing, warmth and a few minutes lying down. |
For a fuller look at what castor oil really can and can’t do, read my post on the truth about castor oil.
Why trends like this sound so convincing
A confident voice, a before-and-after and a catchy name make a great video. They don’t make evidence.
Many bloggers and content creators don’t have training in formulation, and few have the time to check a claim against the research. That’s the gap I care about.
I look for the study, the mechanism and the safety data first, and I’ll tell you plainly when there isn’t any.
Frequently asked questions
Does castor oil in the belly button work?
There’s no good evidence that it works for hormones, digestion or your cycle. Any benefit is more likely to come from the belly massage, the warmth and a calm few minutes.
Is castor oil in the belly button safe?
For most people it’s unlikely to cause harm. Skin irritation, allergic reactions and navel infections are possible, so patch test and keep the area clean.
Can it help with bloating?
Gentle abdominal massage may help some people, but the evidence for the oil itself is missing. Bloating that is persistent or getting worse deserves a conversation with your GP.
Can it regulate my period?
There’s no research showing this. Irregular cycles can have many causes, so see your GP rather than relying on oil.
Will it help me lose belly fat?
There’s no evidence that it does. Castor oil swallowed is a laxative, which is not a safe or effective way to lose weight.
How long should I leave it on?
A few minutes of massage is plenty. Wipe off the excess and wash the area later the same day.
Is it safe during pregnancy?
I’d avoid it. Castor oil by mouth is known to start labour, and safety on the skin in pregnancy hasn’t been established.
Does it have to be castor oil?
There’s no evidence the belly button absorbs oil in a special way, so castor oil has no known advantage here. Any gentle oil you tolerate, such as jojoba, will do the same job for a massage.
The bottom line
Castor oil in your belly button is a harmless-looking habit with big promises and very little evidence behind them. If you enjoy the ritual, you can keep it, as long as you patch test, keep things clean and keep your expectations realistic.
The part that may actually help is the slow belly massage and the few quiet minutes. You don’t need a special oil for either, and you don’t need to wait for a trend to tell you it’s allowed.
And if something feels off, see your GP before reaching for another bottle.
References
- Tunaru S, et al. Castor oil induces laxation and uterus contraction via ricinoleic acid activating prostaglandin EP3 receptors. PNAS, 2012 (PubMed)
- Arslan GG, Eşer I. An examination of the effect of castor oil packs on constipation in the elderly. Complementary Therapies in Clinical Practice, 2011 (PubMed)
- Kayıkçı EE, et al. The effects of abdominal massage on the management of constipation: a systematic review of randomised controlled trials. Bezmialem Science, 2020
- Cosmetic Ingredient Review: safety assessment of castor oil and ricinoleic acid (PubMed)
- Healthline: Castor oil in the belly button
- National Geographic: Which castor oil benefits are backed by science?
Love, Patri xx
