Oligopeptide-27: 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 Oligopeptide-27?

Oligopeptide-27 is a lab crafted chain of forty amino acids that include familiar building blocks such as alanine, arginine, glycine, serine and lysine. Because it is made synthetically rather than taken from animals or plants, its composition can be tightly controlled for purity and consistency. The peptide was first explored by skincare chemists looking for smaller, more targeted options than traditional proteins. As peptide research advanced in the late 1990s and early 2000s formulators noticed that short amino-acid sequences could signal the skin to look firmer and feel smoother, opening the door for ingredients like Oligopeptide-27.

Manufacturing relies on solid-phase peptide synthesis, a step-by-step process that adds one amino acid at a time to build the exact sequence required. After the chain is completed it is purified, tested for safety then blended into cosmetic bases.

You can now find Oligopeptide-27 in serums aimed at firming, anti-aging creams, sheet masks, lightweight moisturizers and targeted eye or neck treatments where a refined skin feel is desired.

Oligopeptide-27’s Cosmetic Benefits/Uses

In formulas Oligopeptide-27 is valued for one main role:

Skin conditioning: The peptide helps soften the surface, supports a smoother texture and can leave skin feeling replenished. By reinforcing the feel of the skin barrier it contributes to a healthier appearance, making it popular in products designed for mature or dehydrated complexions.

Who Can Use Oligopeptide-27

Thanks to its lightweight texture and barrier-supporting nature Oligopeptide-27 suits most skin types including normal, dry, oily and combination. Sensitive skin generally tolerates it well because the peptide is non-acidic and free of fragrance, though individuals prone to reactivity should still monitor how their skin feels when first adding it to a routine.

The ingredient is produced entirely through synthetic chemistry with no animal-derived components, so it fits both vegan and vegetarian lifestyles.

No specific warnings have been issued for pregnancy or breastfeeding. Current safety data suggest topical use is acceptable, but this is not medical advice and anyone who is pregnant or nursing should show the full product label to a healthcare provider before use just to be certain.

Oligopeptide-27 does not make skin more sensitive to sunlight and can be worn day or night without raising the risk of sunburn. As with any peptide avoid combining it with very low pH exfoliating acids in the same layer, as extreme acidity may break the peptide down and lessen its benefits.

Potential Side Effects/Adverse Reactions

Responses to Oligopeptide-27 vary from person to person. The points below outline potential side effects, though most people will not encounter them when using a properly formulated product.

  • Temporary redness or warmth at the application site
  • Mild itching or tingling during the first few uses
  • Dry patches if the formula contains a high level of alcohol or other drying agents
  • Rare allergic contact dermatitis presenting as swelling, hives or intense itching
  • Breakouts in acne-prone skin if the product base is overly rich or occlusive

If any of the above reactions occur discontinue use and consult a qualified medical professional for guidance.

Comedogenic Rating

Rating: 0 / 5

Oligopeptide-27 is a large water-soluble molecule that does not contain heavy oils or waxes so it cannot sink into pores or harden inside follicles. Because it sits on the surface and is typically used at low concentrations it has virtually no potential to clog pores.

That makes it suitable for acne-prone or breakout-prone skin when used in a well-formulated product.

Keep in mind overall pore-clogging risk depends on the full formula. If the serum or cream uses rich butters or high amounts of silicones those carriers could still trigger bumps even though the peptide itself is non-comedogenic.

Summary

Oligopeptide-27 is mainly added to cosmetics for skin conditioning. By supplying a precise chain of amino acids it can signal the skin to feel smoother, support a more even texture and bolster the surface so it looks healthier.

The peptide is still considered niche compared with blockbuster actives like retinol or vitamin C yet it is gaining traction in targeted serums and eye creams thanks to growing interest in peptide technology.

Current research and usage reports show it is generally safe with low irritation risk. As with any new product perform a quick patch test to confirm personal tolerance before applying it to larger areas.

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