Educational information, not medical advice — ask your doctor or midwife.
Shea butter is a thick, creamy fat pressed from the nuts of the shea tree, Vitellaria paradoxa. The tree grows wild across the dry savannah belt of West and Central Africa. In Hausa it is called kadanya.
Most people use it on skin and hair as a rich moisturiser. In parts of West Africa it is also a cooking fat. It appears in soaps, lip balms, lotions and chocolate-style coatings.
The honest verdict: shea butter works as an emollient (a skin softener), and that part is not in doubt. Claims beyond softening and sealing in moisture rest on thin human evidence. Long traditional use is not proof that it works, and it is not proof that it is safe.
Shea butter mainly sits on the skin surface and slows water loss. Fats like this soften the top layer and hold moisture in. That effect is well accepted for rich emollients in general.
The butter also carries plant compounds that have drawn lab interest. In test tubes and in animal studies, some of them appear to calm inflammation. Whether that happens in human skin has not been shown.
Healers in the region rubbed it into aching joints and muscles. No good human trial shows that anything useful reaches the joint. Any relief may come from the massage and the warmth.
Refining changes what is left in the jar. Unrefined butter keeps more of the minor plant compounds. Heavily refined butter is close to plain fat.
The most common form is raw or lightly refined butter in a tub. It is ivory to pale yellow and smells nutty. A small amount is warmed between the fingers and smoothed on.
Refined shea butter is white, smooth and nearly odourless. Makers blend it into lotions, creams and lip balms.
Shea oil is the liquid part, separated from the solid fat. It spreads more easily and feels lighter on skin.
African black soap and many other soaps use shea as a base.
Food-grade shea fat is used for frying and cooking in parts of West Africa. Industry also uses shea stearin in chocolate-type coatings.
Labels matter here. Butter sold for cosmetic use is not made for eating.
Shea has been used across the West African savannah for many centuries. Women have traditionally gathered, boiled, pounded and kneaded the nuts to draw out the fat. The trade is still often called women's gold.
Recorded traditional uses in the region included skin and hair care, massage for sore limbs, dressing for minor wounds, and cooking. Healers also used it for dry scalp, cracked lips and cracked heels.
Travellers wrote about the butter from the 14th century onward. Mungo Park described it in his account of West African travel in the 1790s.
Today shea is a major export. Most of the crop ends up in cosmetics and in the food trade.
Stop using it and wash the area if you get itching, burning, redness or a rash that spreads.
See a doctor if the skin becomes hot, swollen, painful or weeping, as that can mean infection. Also see a doctor if eczema or a dry patch has not improved after two to four weeks.
Get emergency help straight away for swelling of the lips, tongue or throat, a widespread hive-like rash, or trouble breathing. This reaction is very rare, but it needs urgent care.
In the UK and the EU, shea butter is an ordinary cosmetic ingredient and a permitted food fat, including as one of the vegetable fats allowed in chocolate. In the United States it is sold freely as a cosmetic and as a food fat. It is not licensed as a medicine in any of these places.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
What it is typically used for, usual dose, cautions, and the study behind it where real trial data exists.
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