Myristyl-Pg Hydroxyethyl Decanamide: 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 Myristyl-Pg Hydroxyethyl Decanamide?

Myristyl-Pg Hydroxyethyl Decanamide is a lab-crafted ingredient derived from fatty acids found in natural oils such as coconut and palm. Chemically it is a specialized amide formed by linking decanoic acid with a hydroxyethyl group and a myristyl-propyl glycerol segment. This structure gives it a balanced mix of oil-loving and water-loving parts, which makes it particularly friendly to skin. The compound emerged in the early 2000s when formulators looked for milder alternatives to traditional conditioning agents that could deliver a soft, non-greasy feel. Production starts with plant oils that are split into fatty acids and alcohols, which are then reacted through controlled esterification and amidation steps to build the final molecule. You will most often spot Myristyl-Pg Hydroxyethyl Decanamide in moisturizers, night creams, anti-aging serums, leave-on masks and lightweight lotions where a smooth skin finish is desired.

Myristyl-Pg Hydroxyethyl Decanamide’s Cosmetic Benefits/Uses

This ingredient is prized for one clear function in skincare.

Skin conditioning: It forms a delicate, breathable film that softens the surface of the skin, helping it feel silky and well hydrated without clogging pores or leaving a heavy residue.

Who Can Use Myristyl-Pg Hydroxyethyl Decanamide

Thanks to its light cushiony feel Myristyl-Pg Hydroxyethyl Decanamide suits most skin types including dry, normal, oily and combination skin. Its non-occlusive nature means it rarely aggravates acne so even breakout-prone users often tolerate it well. Extremely sensitive or compromised skin may still prefer to introduce the ingredient slowly simply because any new compound can trigger a reaction in fragile skin.

The molecule is synthesized from plant oils and contains no animal derivatives which makes it appropriate for vegans and vegetarians. Processing does not involve common animal-based catalysts or by-products.

No research flags Myristyl-Pg Hydroxyethyl Decanamide as a concern for pregnant or breastfeeding women when used topically. That said this information is not medical advice and anyone who is expecting or nursing should clear new skincare products with their physician first.

The ingredient does not absorb UV light and is not known to increase photosensitivity. Standard daily sunscreen habits are still encouraged for overall skin health.

Potential Side Effects/Adverse Reactions

Side effects from topical use of Myristyl-Pg Hydroxyethyl Decanamide vary from person to person. The points below outline potential reactions only and most users will not experience them when the ingredient is formulated and used correctly.

  • Mild redness or stinging on very sensitive skin
  • Allergic contact dermatitis in individuals with a specific fatty acid or amide allergy
  • Transient clogged pores in users already dealing with severe comedogenic buildup
  • Eye irritation if the product accidentally gets into the eyes

If any uncomfortable reaction occurs stop using the product and consult a healthcare professional.

Comedogenic Rating

Myristyl-Pg Hydroxyethyl Decanamide carries a comedogenic rating of 1 out of 5. Its balanced oil- and water-friendly structure spreads easily without forming a thick occlusive layer, so it is very unlikely to trap debris inside pores. Because the molecule is relatively small and stays mostly on the surface rather than sinking deep into follicular openings it shows little tendency to promote blackheads or whiteheads. In practical terms this makes it suitable for people who are prone to acne or frequent breakouts. As with any ingredient the final formula matters, so very heavy creams that contain this compound alongside richer oils could still pose a clogging risk for some skins.

Summary

Myristyl-Pg Hydroxyethyl Decanamide is used primarily as a skin-conditioning agent, lending products a silky glide and a soft after-feel while avoiding greasiness. It achieves this by forming a light, breathable film that smooths skin texture and helps seal in moisture without blocking pores. You will mostly find it in modern lightweight moisturizers, overnight masks and serums, though it has not yet reached household-name status and remains a niche choice compared with classic emollients like glycerin or dimethicone. Current safety data show very low irritation and allergy potential when used topically, making it a friendly option for nearly all skin types. Still, every complexion is unique so it is wise to perform a small patch test whenever you try a new product containing this or any unfamiliar ingredient.

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