Myristoyl Pentapeptide-10: 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 Myristoyl Pentapeptide-10?

Myristoyl Pentapeptide-10 is a small chain of five amino acids joined to myristic acid, a fatty acid naturally present in coconut oil and nutmeg butter. The pairing of the peptide and the fatty acid helps the molecule blend well with the skin’s outer layer, making it easier to deliver its benefits. First explored in the early 2000s during the boom of peptide research, it quickly found a place in skin care formulas that focus on a smoother, firmer look.

The ingredient is produced in a lab through a two step process. Scientists first build Pentapeptide-10 using solid-phase peptide synthesis, a method that links amino acids one at a time in a precise order. They then attach myristic acid to one end of the peptide, creating a more skin-friendly compound. The final result is a white to off-white powder that dissolves in the water phase of creams and serums.

Today you will often spot Myristoyl Pentapeptide-10 in anti aging serums, firming creams, sheet masks and targeted eye treatments. Brands like it because peptides are seen as gentle yet effective actives that can be used alongside other popular ingredients such as hyaluronic acid and niacinamide.

Myristoyl Pentapeptide-10’s Cosmetic Benefits/Uses

This peptide is added to formulas mainly for one key purpose.

Skin conditioning: Myristoyl Pentapeptide-10 supports the skin’s natural proteins, helping to improve the look of firmness and smoothness over time. When used regularly it can make the surface feel softer and appear more even which is why it is popular in products aimed at reducing the appearance of fine lines.

Who Can Use Myristoyl Pentapeptide-10

Thanks to its lightweight texture and gentle nature Myristoyl Pentapeptide-10 is generally well suited to all skin types including dry oily combination and sensitive. It does not add oil or clog pores which makes it a friendly option for acne-prone complexions as well. People with very reactive skin should still watch how their skin responds because any ingredient can be an irritant for someone.

The peptide is produced entirely in a lab from amino acids and myristic acid that are not sourced from animals, so products using this raw material are normally compatible with vegan and vegetarian lifestyles. Always check the complete ingredient list of the finished product to be sure no other animal-derived components are present.

Current research offers no evidence that Myristoyl Pentapeptide-10 poses particular risks for women who are pregnant or breastfeeding. Still, this is not medical advice and anyone expecting or nursing should run any skincare product past a qualified healthcare professional before use, just to be on the safe side.

The ingredient does not increase the skin’s sensitivity to sunlight, so it is not considered photosensitising. Standard daily sunscreen use is still important for overall skin health.

Potential Side Effects/Adverse Reactions

Side effects from topical Myristoyl Pentapeptide-10 can vary from person to person. The points below outline potential reactions, though most users will not experience them when the ingredient is used correctly in a well-formulated product.

  • Redness or mild irritation
  • Itching or tightness
  • Rare allergic contact dermatitis
  • Stinging around the eye area if the formula migrates

If you develop any of these issues stop use and consult a healthcare professional or dermatologist.

Comedogenic Rating

Rating: 1/5

Although the molecule contains myristic acid, which on its own can block pores, the acid is chemically bound to a water-soluble peptide and used in very small amounts. This keeps the finished ingredient light, non-oily and unlikely to sit inside pores long enough to cause congestion.

Because of the low rating Myristoyl Pentapeptide-10 is generally suitable for skin that tends to break out. Of course the overall formula matters, so a product packed with heavy oils could still trigger pimples even if the peptide itself does not.

Formulation level is usually between 0.5 % and 2 %, further reducing any pore-clogging risk.

Summary

Myristoyl Pentapeptide-10 is a lab-made blend of a small peptide and myristic acid that conditions skin, supports a firmer feel and helps soften the look of fine lines. The fatty tail lets the peptide mingle with the skin’s surface so it can do its job more efficiently.

It enjoys modest popularity: not as famous as Matrixyl or copper peptides yet appreciated by formulators who want a gentle firming boost without adding heavy oils or strong actives.

Safety data show it is well tolerated for most users with a low risk of irritation or clogged pores. As with any new skincare ingredient it is smart to patch test a fresh product first to confirm your skin agrees with it.

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