Oligopeptide-99 Amide: 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-99 Amide?

Oligopeptide-99 Amide is a lab-made chain of 15 amino acids, ending with an amide group that helps keep the peptide stable. The chain is built from familiar amino acids such as alanine, arginine, isoleucine, leucine, lysine and tryptophan. Because it is synthetic, it does not rely on animal or plant extraction, which makes quality control and purity easier for manufacturers.

The idea of using short peptides in skin care took off in the early 2000s when researchers found that select sequences could send helpful signals to skin cells. Oligopeptide-99 Amide was developed as part of this wave, with a focus on controlling excess oil and keeping skin clear while also defending against environmental stress.

Production starts with solid-phase peptide synthesis, a step-by-step process in which each amino acid is attached in a precise order on a resin support. After the 15-amino-acid chain is complete, the peptide is capped with an amide group, then purified to remove any by-products. The final powder is blended into cosmetic bases as a water-soluble active.

You will typically see Oligopeptide-99 Amide in lightweight serums, daily moisturizers for oily or breakout-prone skin, sheet masks, anti-pollution sprays and spot treatments that aim to calm and balance the complexion.

Oligopeptide-99 Amide’s Cosmetic Benefits/Uses

This multi-tasking peptide supports healthier looking skin in several ways:

  • Anti-Sebum: Helps regulate surface oil, giving skin a fresher matte finish and reducing the look of enlarged pores
  • Antimicrobial: Limits the growth of unwanted surface bacteria which can lessen the chance of blemishes and odor
  • Antioxidant: Neutralizes free radicals from pollution and UV exposure so skin is less likely to show early signs of aging such as dullness and uneven tone
  • Skin Protecting: Forms a light protective shield that supports the skin barrier, helping it stay resilient against daily stress like wind, dirt and makeup wear

Who Can Use Oligopeptide-99 Amide

Because its main talent is keeping excess oil in check, Oligopeptide-99 Amide is especially helpful for oily and combination skin. Normal skin can also enjoy its balancing and protective perks. Very dry or moisture-compromised skin may find it a touch too oil-reducing if the formula does not include enough hydrating helpers, so choosing a well-rounded product is key. The peptide is generally gentle which makes it a friendly choice for most sensitive skin users.

The ingredient is made entirely in the lab with no animal or plant extraction which means it is suitable for vegans and vegetarians.

No data suggest that topical Oligopeptide-99 Amide is unsafe for pregnant or breastfeeding women. It is a large molecule that is unlikely to enter the bloodstream in significant amounts. That said this is not medical advice and anyone who is pregnant or nursing should always run new skincare products past a qualified doctor to stay on the safe side.

The peptide does not cause photosensitivity so daytime use does not increase the risk of sunburn. Of course a broad-spectrum sunscreen is still recommended for overall skin health.

Potential Side Effects/Adverse Reactions

Responses to any skincare ingredient can differ from person to person. The following list covers potential side effects linked to topical Oligopeptide-99 Amide use. These are uncommon when the ingredient is properly formulated but they can happen in rare cases

  • Temporary redness or warmth
  • Mild stinging or tingling on initial application
  • Dry or tight feeling if used in a very lightweight base on already dehydrated skin
  • Localized itching or small bumps linked to individual allergy or sensitivity
  • Contact dermatitis when combined with high levels of strong exfoliating acids or alcohol

If any of these issues occur stop using the product and seek advice from a healthcare professional or dermatologist

Comedogenic Rating

Rating: 0 / 5

Oligopeptide-99 Amide is a small, water-soluble peptide that leaves no oily residue and does not clog pores. It sits on the skin surface, delivers its oil-balancing and antimicrobial benefits, then rinses away easily. Because it contains no heavy waxes or fatty acids it earns the lowest possible score on the comedogenic scale.

This makes it a good match for skin that is prone to acne or frequent breakouts.

Keep in mind the overall formula still matters. If the peptide is blended into a very rich cream the final product could still feel heavy on oily skin even though the peptide itself is non-comedogenic.

Summary

Oligopeptide-99 Amide is a lab-crafted 15-amino-acid peptide that helps control excess oil, fights surface bacteria, neutralizes free radicals and supports the skin barrier. It performs these jobs by sending calming signals to skin cells, soaking up free radicals before they can cause damage and creating a light protective film that keeps moisture in and irritants out.

It currently sits in the niche category of specialty peptides so you will not find it in every drugstore shelf but brands targeting oily or city-stressed skin are starting to pick it up.

Overall safety data look solid with very low rates of irritation or allergy. As with any new skincare ingredient a patch test is a smart move before diving into full-face use.

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