Astrocaryum Murumuru Seed Powder: What Is It, Cosmetic Uses, Benefits & Side Effects

Curious about this ingredient? In this article we're explaining exactly what it is and why it's used within cosmetic formulations.
Updated on: June 23, 2025
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All information on this page is verified using The Personal Care Products Council's (PCPC) INCI database. Our ingredient analyses are based exclusively on PCPC's technical data to ensure accuracy and reliability.

What Is Astrocaryum Murumuru Seed Powder?

Astrocaryum Murumuru Seed Powder comes from the seeds of the murumuru palm, a tall tree native to the Amazon region. Once the seeds are harvested their shells are removed then the kernels are dried and finely ground to create a beige-to-light-brown powder. The seeds are naturally rich in lauric, myristic and oleic fatty acids, along with small amounts of plant waxes that give the powder a smooth feel on the skin.

Indigenous communities have long used murumuru seeds for food and hair care. When global beauty brands began exploring rainforest botanicals in the late 20th century, they noticed that the crushed seeds offered a gentle scrubbing action without the sharp edges found in some mineral or plastic exfoliants. Today the powder is produced in small batches near the harvest sites, helping to keep the oil content intact while supporting local economies.

Because of its fine yet slightly gritty texture, Astrocaryum Murumuru Seed Powder is popular in facial and body scrubs, cleansing powders, solid shampoo bars, exfoliating masks and hand or foot treatments. It is often blended with clays, botanical oils or surfactants to give formulas a mild polishing boost.

Astrocaryum Murumuru Seed Powder’s Cosmetic Benefits/Uses

The main role of this ingredient is as an abrasive, meaning it helps sweep away dead surface cells and impurities.

As an abrasive Astrocaryum Murumuru Seed Powder provides gentle physical exfoliation that can leave skin feeling smoother and looking more radiant. The round, plant-based particles buff without scratching, making them suitable for most skin types when used in moderation. In hair products the powder aids in removing product buildup from the scalp which can improve overall hair freshness.

Who Can Use Astrocaryum Murumuru Seed Powder

This gentle plant‐based scrub suits most skin types including normal, dry, combination and oily skin. Its rounded particles polish rather than scratch, making it kinder than many nut shell or salt scrubs. Extremely sensitive or inflamed skin, such as active eczema or severe rosacea, may find any physical exfoliation uncomfortable so a patch of calm skin should be tried first or the ingredient skipped altogether until the flare subsides.

The powder is 100 % derived from a palm seed with no animal substances, so it aligns with vegan and vegetarian lifestyles.

Current safety data show no specific risks for those who are pregnant or breastfeeding. Still, this is not medical advice and anyone expecting or nursing should run new skincare products past a healthcare professional to be safe.

Astrocaryum Murumuru Seed Powder does not make skin more sensitive to sunlight, so it is not considered a photosensitizer. It is also biodegradable, posing no microplastic concern for waterways.

Potential Side Effects/Adverse Reactions

Reactions vary from person to person; below is a list of potential side effects, though most users will not experience them when the ingredient is formulated and used correctly.

  • Temporary redness or stinging from overzealous scrubbing
  • Dry or tight feeling if used too often on already dry skin
  • Minor microtears in very thin or fragile skin when applied with heavy pressure
  • Allergic contact dermatitis in individuals allergic to palm derivatives
  • Exacerbation of active acne lesions if particles are rubbed aggressively over open pimples
  • Nasal or throat irritation from inhaling airborne powder during DIY mixing
  • Increased irritation when layered with other exfoliants like glycolic acid or retinoids

If any irritation, prolonged redness or other unwanted reaction occurs, discontinue use and consult a qualified healthcare professional.

Comedogenic Rating

Rating: 2 / 5

Although murumuru seeds are rich in lauric and myristic acids, only trace amounts of these oils remain in the finely milled powder so there is limited potential for pore blockage. The particles are meant to be rinsed away after use which further reduces residue on the skin. For most people, especially when the powder is part of a wash-off scrub, the risk of new blackheads or whiteheads is low. Those who break out very easily can usually use it without trouble, yet extremely acne-prone skin may prefer chemical exfoliants or ultra-mild jojoba beads.

The powder is unlikely to trap bacteria in follicles but clogged pores could occur if heavy pressure drives the particles deep into congested areas or if an oil-rich base is left on the skin afterward.

Summary

Astrocaryum Murumuru Seed Powder acts primarily as a gentle abrasive that polishes away dead cells and surface debris, leaving skin smoother and brighter while helping shampoo bars and scalp scrubs lift buildup. It does this through its small rounded plant particles which buff rather than scratch, offering a mild physical exfoliation suitable for most skin and hair types.

It enjoys moderate popularity in natural and solid beauty products; you will spot it more often in eco-minded brands than on mainstream drugstore shelves. Overall safety data are favorable with irritation or clogging issues appearing only when the powder is misused or overapplied. As with any new cosmetic ingredient, give your skin a chance to adjust by patch testing first and follow product directions for frequency and pressure.

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