Macadamia Seed Oil Polyglyceryl-6 Esters Behenate: 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 Macadamia Seed Oil Polyglyceryl-6 Esters Behenate?

Macadamia Seed Oil Polyglyceryl-6 Esters Behenate is a specialty ingredient that begins with macadamia nut oil, prized for its fatty acid profile. Chemists combine this oil with behenic acid and a plant-derived bundle of six glycerin units. Through a process called transesterification, these components are re-shuffled at the molecular level to create a stable ester that is lighter and less greasy than the original oil. This tweak keeps the nurturing feel of macadamia while giving formulators a more versatile texture.

The ingredient emerged in the early 2000s when brands searched for plant-based alternatives to petroleum-heavy emollients. By linking macadamia oil to polyglycerin, suppliers offered a biodegradable option that plays well with water and oil phases. Production typically happens in closed reactors where heat and a food-grade catalyst drive the reaction, followed by filtration and quality checks.

Because of its silky finish and mild nature, Macadamia Seed Oil Polyglyceryl-6 Esters Behenate shows up in face moisturizers, night creams, cleansing balms, sheet mask essences, baby lotions and even color cosmetics like creamy foundations.

Macadamia Seed Oil Polyglyceryl-6 Esters Behenate’s Cosmetic Benefits/Uses

This ingredient earns its place on labels thanks to several helpful roles

  • Skin conditioning: Leaves skin feeling soft and smooth while helping lock in moisture for a plumper look
  • Emollient: Fills in tiny gaps on the skin surface to reduce roughness and create a comfortable, non-tacky finish
  • Cleansing: Helps dissolve makeup and daily grime so they rinse away easily without stripping natural lipids

Who Can Use Macadamia Seed Oil Polyglyceryl-6 Esters Behenate

This ester suits most skin types, including dry, normal and combination skin thanks to its balanced fatty acid profile and lightweight feel. Oily or acne-prone users usually tolerate it as well, since the molecule is less greasy than raw nut oil, though anyone with very reactive pores may want to keep an eye on how their skin responds. Sensitive skin generally fares well because the ingredient is considered mild and free of common irritants.

It is fully plant derived, containing no animal by-products, so it meets vegan and vegetarian standards.

There are no known issues for pregnant or breastfeeding women when the ingredient is used topically. This is not medical advice; expecting or nursing mothers should still show any skincare routine to their doctor to be safe.

The molecule does not make skin more prone to sunburn, so it is considered non-photosensitizing. It is also odorless and free of added fragrance, which further lowers the chance of scent-related sensitivity.

Potential Side Effects/Adverse Reactions

Responses to topical Macadamia Seed Oil Polyglyceryl-6 Esters Behenate vary from person to person. The effects listed below are possible yet unlikely for most users when the ingredient is formulated and used as intended.

  • Mild skin irritation in individuals with extreme sensitivity to nut derived compounds
  • Allergic contact dermatitis in rare cases involving undiagnosed macadamia nut allergy
  • Temporary clogged pores or breakouts for those who are highly acne prone and react to richer lipids
  • Eye stinging if a cleansing balm or cream containing the ester is rubbed directly into the eye area and not rinsed promptly

If any discomfort or visible reaction occurs stop using the product and seek advice from a healthcare professional or dermatologist.

Comedogenic Rating

Rating: 2/5

This score reflects a balanced profile. The molecule still carries long chain fatty acids that can linger in pores, yet the attached polyglycerin makes it more water friendly and less likely to form a heavy film than raw macadamia oil. Its large size and partial solubility help it rinse off rather than settle deep in follicles.

Most people prone to breakouts tolerate it, though those with very reactive or cystic acne might prefer leaner formulas.

Keep in mind overall formulation matters; a light lotion with a small dose of the ester is far less likely to clog pores than a thick cleansing balm packed with multiple oils.

Summary

Macadamia Seed Oil Polyglyceryl-6 Esters Behenate conditions skin, acts as a silky emollient and aids gentle cleansing. It does this by merging the cushioning fatty acids of macadamia with a polyglycerin backbone that improves spreadability, lowers greasiness and helps lift impurities when rinsed.

The ingredient sits in the quietly popular category; you will spot it in modern moisturizers, cleansing balms and hybrid makeup but it has not reached the household name status of shea butter or jojoba oil.

Overall safety is high with a low risk of irritation, allergy or photosensitivity. As with any new skincare ingredient it is smart to patch test a fresh product to make sure your skin agrees with it.

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