Castor oil packs are one of those holistic health practices that look almost too low-tech to be worth your attention. A piece of flannel soaked in castor oil, placed on the skin, covered with heat. That's essentially the whole thing. Yet this simple technique has been used in Ayurvedic medicine, traditional Egyptian healing and by naturopaths across the world for well over a century. It's seeing a quiet resurgence, and for good reason.
What castor oil packs actually are
A castor oil pack is a cloth, usually unbleached cotton flannel, saturated with cold-pressed castor oil and applied to the body. Most practitioners place it over the abdomen, particularly on the right side over the liver. A heat source, typically a hot water bottle, goes on top. You rest with it in place for 45 to 60 minutes.
The oil itself comes from the seeds of Ricinus communis, the castor plant. Cold-pressed castor oil is rich in ricinoleic acid, a fatty acid that research has linked to anti-inflammatory and analgesic effects when absorbed through the skin. It's distinct from the processed castor oil used industrially. Make sure you're buying food-grade or therapeutic-grade cold-pressed castor oil, not a hardware-store product.
What castor oil packs are used for
Castor oil packs are used most commonly for liver support, digestive complaints and menstrual discomfort. The liver sits just beneath the right side of the ribcage, which is why abdominal placement is so common. Practitioners who use packs regularly describe improvements in bloating, constipation and a general sense of heaviness after meals.
Menstrual cramps are another frequent application. Placing a castor oil pack on the lower abdomen during the first two days of a cycle can ease cramping and reduce the sensation of pelvic congestion. The warmth alone contributes to muscle relaxation, but proponents of the practice believe the ricinoleic acid adds something the heat alone doesn't.
Castor oil packs are also used for:
- General muscle tension and joint discomfort, particularly in the lower back
- Lymphatic congestion and sluggishness (they're often paired with lymphatic drainage massage as a complementary approach)
- Thyroid support when placed on the neck, though this is a more specialised application
How to set up and use a castor oil pack at home
You don't need much. A piece of cotton flannel roughly 30 by 40 centimetres, cold-pressed castor oil, an old towel you don't mind staining, a hot water bottle and about an hour of downtime.
Fold the flannel two or three layers thick. Pour enough castor oil over it so the cloth is well saturated but not dripping. Lie down on your old towel (castor oil stains are very difficult to remove). Place the saturated cloth directly onto your skin over the target area, right side of the abdomen for liver work, lower abdomen for menstrual support. Put the hot water bottle on top. Cover yourself with a blanket and rest for 45 to 60 minutes.
Afterwards, wipe the skin with a damp cloth mixed with a little bicarbonate of soda. This neutralises any remaining oil and prevents residue build-up. Store your flannel in a glass container in the fridge between uses. One piece of flannel can be reused for up to 30 sessions before it needs replacing.
How often to use them
For general liver and digestive support, three to four sessions per week over four weeks is a common starting protocol. For menstrual support, using the pack in the week before your period and during the first two days of your cycle is the most commonly recommended timing.
Castor oil packs work well alongside other grounding practices. If you already use breathwork or herbal tea rituals to wind down, the pack session slots naturally into the same window. Pairing it with a warm herbal tea ritual during the rest period makes the full session feel genuinely restorative rather than like a chore.
Who should avoid castor oil packs
Castor oil packs are not appropriate for everyone. Do not use them during pregnancy. Avoid placing them over broken, inflamed or infected skin. People with certain digestive conditions, including Crohn's disease and active ulcerative colitis, should consult a naturopath or their GP before trying abdominal packs. If you have a diagnosed liver condition, check with your health practitioner before using them on the liver area specifically.
Castor oil packs are a complementary practice. They support the body's own processes rather than treating disease. If you have an underlying condition, they're an addition to your care, not a replacement for it.
Choosing the right castor oil
The quality of the oil matters. Look for cold-pressed, hexane-free castor oil in a glass bottle. Brands that sell certified organic oil are preferable. Heritage Store is one of the most widely recommended therapeutic castor oil brands, with a long track record in natural health circles. Avoid any product that comes in a plastic bottle, since castor oil can leach plasticisers from plastic over time.
The practice itself costs very little and asks almost nothing of you except stillness. For people who find structured meditation difficult, a castor oil pack session provides a built-in reason to lie quietly for an hour, which carries its own value entirely apart from the oil. It's a rare example of a holistic health tool that works partly through what it makes you stop doing.