Pentaclethra Macroloba Seed Oil: 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: July 1, 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 Pentaclethra Macroloba Seed Oil?

Pentaclethra Macroloba Seed Oil, often called pracaxi oil, comes from the seeds of Pentaclethra macroloba, a tall legume tree that grows in the Amazon rainforest. The seeds are packed with fatty acids, especially behenic acid along with oleic and linoleic acids. These long-chain fats give the oil a smooth, almost silky feel that makes it stand out among plant oils.

Indigenous communities have used the seeds for generations to soften hair, soothe skin and help minor scrapes. Interest from the beauty industry grew once researchers noted the seed’s high behenic acid level, which is much higher than in the more familiar peanut or moringa oils. Today the oil is usually produced by cold pressing or gentle solvent extraction followed by mechanical filtering to keep its nutrients intact while removing seed solids and excess water.

You will spot Pentaclethra Macroloba Seed Oil in creamy hair masks, leave-in conditioners, frizz-taming serums, rich body butters, hand creams, lip balms, facial moisturizers and after-sun lotions. In these products it lends both softness and a light protective layer that helps lock in moisture.

Pentaclethra Macroloba Seed Oil’s Cosmetic Benefits/Uses

This oil brings two main benefits to beauty formulas

  • Hair conditioning – The high behenic acid content coats each strand, making hair feel smoother, easier to comb and less prone to breakage. It also adds a healthy gloss without weighing hair down.
  • Emollient – On skin the oil fills in tiny gaps between cells, creating a soft, supple surface. It helps reduce water loss, calms rough patches and leaves a non-greasy finish that feels breathable.

Who Can Use Pentaclethra Macroloba Seed Oil

This oil works well for most skin types. Normal, dry, combination and mature skin can enjoy its smoothing effect and light moisture seal. Oily or acne-prone skin may also tolerate it thanks to its quick-absorbing texture, though anyone who breaks out easily should monitor how their skin responds.

Because the oil is plant derived it fits vegan and vegetarian lifestyles. No animal by-products are involved in harvesting, pressing or refining the seeds.

Current research has found no specific risks tied to topical use during pregnancy or while breastfeeding. That said this is not medical advice. Expectant or nursing mothers should show any new product to their doctor to be safe.

Pentaclethra Macroloba Seed Oil does not make skin more sensitive to sunlight and carries no known sun-related cautions. It is also free of common fragrance allergens and is not known to interfere with actives such as retinol or vitamin C.

Potential Side Effects/Adverse Reactions

Side effects from topical Pentaclethra Macroloba Seed Oil differ from person to person. The points below cover potential reactions though most users will not run into these problems when the ingredient is formulated and used correctly.

  • Allergic response such as itching redness or hives in those sensitive to legumes or seed oils
  • Clogged pores or mild breakouts in individuals who are highly acne-prone
  • Scalp buildup or greasiness if applied in excess on fine or low-porosity hair
  • Contact dermatitis from impurities if the oil is poorly refined

If any irritation or unexpected reaction occurs stop use and consult a healthcare professional or dermatologist.

Comedogenic Rating

Rating: 1 out of 5

Pentaclethra Macroloba Seed Oil contains mostly long chain fatty acids like behenic and oleic acid that sit lightly on skin and tend to absorb rather than harden inside pores. Its molecular weight is higher than that of typical pore-clogging oils, so it is less likely to trap dirt or dead cells. A small risk remains for extremely breakout-prone users because any oil can mix with sebum and raise the chance of congestion if applied heavily or left on overnight in hot humid climates.

Sensitive or acne-prone skin usually tolerates this ingredient, though the risk is not zero. Unrefined or heavily processed batches may carry residual proteins that could slightly raise comedogenic potential.

Summary

Pentaclethra Macroloba Seed Oil acts mainly as a hair conditioner and skin emollient. Its rich behenic acid content smooths cuticles, adds slip and reduces breakage while on skin it fills micro-gaps between cells to soften, reduce moisture loss and leave a breathable finish.

The oil is gaining popularity, especially in clean beauty and textured hair care lines, though it is not yet as common as argan or coconut oil. Brands appreciate its silky feel and the story of its Amazonian origin.

Overall safety is high with low rates of irritation or allergy. Still, every skin type is unique so it is smart to patch test any new product that contains this oil to confirm personal tolerance before full use.

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