Murumuru Butter for Skin: What It Does and Who It Suits

What is murumuru butter?

Murumuru butter is the fat pressed from the seeds of Astrocaryum murumuru, a palm in the family Arecaceae, native from northern South America into northern Brazil ^[16]. Botanically it is a palm seed. In the jar it is a solid yellow butter with a characteristic smell ^[2].

Two saturated medium-chain fatty acids do nearly all the work: lauric acid (C12), reported at 40% in one published analysis and 64% in another ^[1][2], and myristic acid (C14) at about 27% ^[1]. The unsaturated acids that dominate most plant oils come to under 5% between them ^[1].

In the Wild Ice line murumuru appears in one place, D.B.T. Baba Yaga, our peptide and ceramide cream, a silky one that comes in a pump bottle. The butter is a small, sturdy part of that formula, in the company of ingredients far more fragile than it is.

What are the benefits of murumuru butter for skin?

The Cosmetic Ingredient Review panel, assessing plant-derived fatty acid oils as a class, names their jobs directly ^[5]:

• Occlusive. A hydrophobic film that physically blocks water loss ^[9]. Applied plant oils do exactly that, so skin retains moisture and measured water loss falls ^[8].
• Emollient. It smooths skin by filling the space between surface flakes with oil ^[9].
• Skin conditioning and moisturizing. Skin reads softer and less tight, and a butter supports the look and feel of the skin barrier while your skin does its own work ^[5].

One thing it does not do is deliver vitamin A. Murumuru is often called rich in provitamin A, and the most detailed published characterization looked for carotenoids and found none ^[1].

Everything murumuru does for skin is on that short list. If your skin is stripped and reactive at the moment, how to help a stressed barrier settle is the more useful read.

Why murumuru butter melts as you work it in

Measured across a set of Amazonian butters, murumuru's mean melting point came out at 32 degrees Celsius, plus or minus 0.58 ^[2]. That sits below body temperature, which is why a butter that is hard and waxy in the jar turns oily within seconds of contact. Its solid-fat curve runs close enough to cocoa butter's that food scientists have proposed it as a cocoa butter replacer ^[3]: firm when cool, melting cleanly over a narrow range.

Does murumuru butter clog pores?

No one has published a measurement. We could find no human comedogenicity study of murumuru butter in the literature, so the 0-to-5 numbers on ingredient-checking sites are inferences. Those scales descend from the original Kligman and Mills comedogenic ingredient list ^[10], compiled from the kind of rabbit-ear screening of cosmetic ingredients published through the 1980s ^[12].

Dermatology has since grown careful with them. A 2025 clinical review notes that the rabbit-ear model is extremely sensitive, so not everything that reacts in it reacts on a face, and that the ratings gave inconsistent results on human skin ^[10]. It names the flaw that matters most to anyone reading a label, testing isolated ingredients rather than finished formulations, and points out that "noncomedogenic" carries no legal FDA definition, while the consumer databases built on the original list are not governed by scientific or regulatory standards ^[10].

A human back-patch study supplies the finding that settles it: when researchers patch-tested finished formulas built with ingredients the old lists called comedogenic, the formulas did not necessarily behave the way the list predicted ^[11]. Reactions vary from person to person ^[10], so a patch test of the actual product tells you more than an ingredient list can. Moisturizing blemish-prone skin is ordinary practice: the review that supplied those definitions was written about moisturizers for acne ^[9].

Murumuru vs shea butter

Both butters do related jobs from different chemistry, and the structural comparison is the honest one, on chain length and saturation. As the study that characterized six Amazonian fats put it, each species has its own precise composition, which makes them noninterchangeable ^[1].

Who it suits, and who should be careful

A butter this occlusive earns its place on skin that reads dry, tight or rough, and as the last step of a routine, which is the job murumuru does in D.B.T. Baba Yaga, the cream that closes ours. On skin that already feels comfortable and a little oily, a butter this rich can be more than you want.

A caution worth naming precisely: murumuru and shea sit on the same ingredient list in D.B.T. Baba Yaga. Murumuru is a palm seed ^[16], and neither shea nor any palm appears on FDA's current list of tree nuts it considers major food allergens, though that guidance covers food labeling and is not a clinical clearance ^[14]. With a diagnosed tree-nut allergy, raise both butters with your clinician and patch test first.

That cream also carries salicylic acid low on the ingredient list and a white willow bark ferment, a salicin source rather than free salicylic acid. Topical salicylic acid at cosmetic levels is generally considered acceptable in pregnancy, and the real caution is high-dose oral salicylates, so check with your clinician if you are pregnant or salicylate-sensitive. What willow bark does on skin covers the salicin distinction. It is lightly scented with a trace of jasmine oil; if you would rather skip essential oils altogether, Gaea's Gala, 7 Winters and Eyecicle are made without them.

Where murumuru sits in D.B.T. Baba Yaga

In D.B.T. Baba Yaga, our peptide and ceramide cream, murumuru sits fairly deep on the ingredient list, in among the shea and the sunflower and abyssinian oils rather than at the top of it. I would rather say that outright than let a page about one butter imply the cream is a murumuru product.

The butter is the structural, comforting part of the formula, and the durable part: saturated fats resist oxidation longest ^[15], so a cream that has to sit warm for a year or two has every reason to lean on fats like this one and go light on anything fragile beside them. Around it sits the fragile company: Ceramide NP, AP and EOP with cholesterol and phytosphingosine, two palmitoyl dipeptides, niacinamide, and white willow and rowan ferment filtrates. Those are the ingredients that ask something of how a cream is made and stored, which is the subject of what makes a skincare active fragile. We can afford to build the formula the other way around: we make a fresh batch every week, and between batch day and ship day it waits in the studio refrigerator at about 4 degrees Celsius, so the fragile company around the butter is spared the warm months in storage that would quietly spend it. The cold is for everything around the butter, since heat and time act on fragile actives rather than on a saturated fat.