Sodium Astrocaryum Murumuruate: 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 30, 2025
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We verify all information on this page using publicly available nomenclature standards from The Personal Care Products Council (PCPC), the European Commission's CosIng database and documentation provided directly by ingredient manufacturers. Our analysis is based on technical data from these sources to ensure accuracy and reliability.

What Is Sodium Astrocaryum Murumuruate?

Sodium Astrocaryum Murumuruate is a plant-derived ingredient made from the fatty acids found in Astrocaryum murumuru seed oil that have been reacted with a small amount of sodium. The seeds come from the murumuru palm, a tree native to the Amazon region. Local communities have long pressed the seeds into a rich butter to soften skin and hair, and formulators later adapted this traditional material for modern personal care.

To obtain Sodium Astrocaryum Murumuruate, manufacturers first extract the oil from cleaned and dried murumuru seeds. The oil is gently refined, then undergoes a process called saponification, where controlled amounts of sodium are added to convert some of the natural triglycerides into their more water-friendly sodium salts. The result is a soft, waxy ingredient that blends smoothly with both oils and water-based phases.

Because it offers both conditioning and mild cleansing properties, Sodium Astrocaryum Murumuruate appears in a wide range of products. You will find it in creamy facial cleansers, hydrating body washes, nourishing shampoos, rich moisturizers, leave-in conditioners, hair masks and even baby care formulas aimed at delicate skin.

Sodium Astrocaryum Murumuruate’s Cosmetic Benefits/Uses

This versatile ingredient supports a formula in two key ways:

  • Emollient – its fatty acid content coats skin and hair with a thin, softening layer that helps trap moisture, reduce rough texture and boost overall smoothness. In hair care it can also add slip for easier detangling and shine
  • Cleansing – the sodium salts act like mild surfactants, loosening everyday dirt and excess oil without stripping natural lipids so formulas feel gentle yet effective

Who Can Use Sodium Astrocaryum Murumuruate

Sodium Astrocaryum Murumuruate is generally well tolerated by most skin types. Its lightweight emollient film helps dry and sensitive skin retain moisture while the mild cleansing action rarely disturbs balanced or combination skin. Extremely oily or acne-prone complexions might find rich formulas containing high levels of murumuru derivatives feel a bit heavy so lighter textures are preferable in those cases.

The ingredient is entirely plant derived, containing no animal by-products, so it is suitable for vegans and vegetarians.

Current safety data shows no specific concerns for women who are pregnant or breastfeeding when this ingredient is used topically in cosmetic concentrations. This is not medical advice and anyone who is expecting or nursing should discuss any skincare product with a qualified healthcare provider before use to be sure it fits their individual situation.

Sodium Astrocaryum Murumuruate does not increase photosensitivity so there is no special sun care caution beyond regular daily SPF use.

Potential Side Effects/Adverse Reactions

Responses to topical ingredients vary from person to person. The points below outline potential issues that could occur with Sodium Astrocaryum Murumuruate, though most users will not encounter them when the ingredient is formulated and used correctly.

  • Mild skin irritation – very sensitive individuals may notice temporary redness or itching
  • Allergic contact dermatitis – rare but possible if someone has a specific sensitivity to murumuru seed components
  • Clogged pores or breakouts – unlikely yet feasible for those prone to congestion if formulas are overly rich for their skin type
  • Heavy feel or buildup on hair – using large amounts in leave-in products may weigh down fine strands
  • Eye irritation on direct contact – rinsing eyes with clean water resolves most discomfort quickly

If any unwanted reaction occurs stop use immediately and consult a healthcare professional if symptoms persist or worsen.

Comedogenic Rating

Rating: 2/5. While the base murumuru butter can be quite rich, converting some of its fatty acids into their sodium salts lowers the chance of pore blockage compared with the raw butter. The ingredient forms a light occlusive film that most skin types can tolerate without congestion, yet very oily or severely acne-prone skin might still react if the overall formula is heavy. In most balanced cleansers and lotions Sodium Astrocaryum Murumuruate is unlikely to trigger breakouts, so it is generally acceptable for those prone to acne as long as the rest of the product is lightweight.

Comedogenicity also depends on the full formulation, how often it is used and whether it is rinsed off or left on, so any rating should be taken as a guideline rather than an absolute rule.

Summary

Sodium Astrocaryum Murumuruate acts mainly as an emollient that softens skin and hair by laying down a thin fatty layer and as a mild cleanser thanks to its sodium salts that lift away surface grime without stripping. These dual abilities let formulators build creamy textures that feel rich yet rinse clean.

It is not the most talked-about ingredient in beauty circles but has gained steady popularity in sulfate-free body washes, gentle shampoos and moisturizers aimed at dry sensitive users who want plant-based options.

Current data shows it is safe for topical use at the levels found in cosmetics with low risk of irritation or allergy for most people. As with any new skincare addition, performing a simple patch test helps catch individual sensitivities before full use.

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