Oligopeptide-98 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-98 Amide?

Oligopeptide-98 Amide is a lab made chain of 19 amino acids capped at one end with an amide group, which helps stabilize the molecule. The chain brings together common building blocks like alanine, arginine, serine and tryptophan in a specific order that encourages skin friendly activity. Because it is made entirely by synthesis rather than taken from animals or plants, the ingredient is consistent in purity and free from seasonal variation.

This peptide emerged from research into short protein fragments that could calm overactive oil glands while keeping skin balanced. Early studies showed that certain sequences could mimic the skin’s own defense signals, so formulators tweaked the chain length and added the amide cap to boost stability. After safety testing it began showing up in niche Korean skincare around the late 2010s, then moved into wider global use as labs made production more cost-effective.

Manufacturing starts with solid phase peptide synthesis, a step-by-step process that adds one amino acid at a time to a growing chain anchored on a resin bead. Protective groups keep each step precise. When the 19th amino acid is in place the chain is released, capped with an amide, purified by chromatography and dried into a fine powder ready for blending.

You will most often see Oligopeptide-98 Amide in lightweight serums, oil control moisturizers, sheet masks and leave-on spot treatments designed for combination or breakout-prone skin. It is also included in some antioxidant rich day creams that promise protective benefits.

Oligopeptide-98 Amide’s Cosmetic Benefits/Uses

Formulators reach for this peptide because it tackles several common skin concerns at once:

  • Anti-Sebum: Helps reduce excess oil production which can keep shine in check and make makeup last longer
  • Antimicrobial: Limits growth of surface bacteria that can contribute to clogged pores and blemishes supporting clearer looking skin
  • Antioxidant: Neutralizes everyday environmental stressors like pollution and UV related free radicals aiding in the prevention of premature dullness and fine lines
  • Skin Protecting: Reinforces the skin’s natural barrier so moisture stays in and irritants stay out promoting overall resilience

Who Can Use Oligopeptide-98 Amide

This peptide suits most skin types, particularly oily, combination and normal skin because of its oil balancing action. Dry or very sensitive skin can still benefit from its antioxidant and barrier support but may need a richer moisturizer alongside it to keep flaking at bay. There are no known concerns for darker skin tones or skin that tans easily.

Because Oligopeptide-98 Amide is made entirely by chemical synthesis with no animal by products it is suitable for both vegans and vegetarians.

No studies have flagged special risks for women who are pregnant or breastfeeding. Still this is not medical advice and anyone who is expecting or nursing should show the ingredient list of any new skincare product to a doctor before use just to be safe.

The peptide does not make skin more sensitive to sunlight so it is not considered photosensitizing. Daily sunscreen is always recommended, yet there is no extra need to adjust your routine when adding this ingredient.

Potential Side Effects/Adverse Reactions

Responses to any skincare ingredient vary from person to person. The points below cover possible reactions to topical Oligopeptide-98 Amide but they are uncommon when the formula is well made and used as directed.

  • Mild redness or warmth
  • Tightness or fleeting dryness, especially in already dehydrated areas
  • Itching or small bumps signaling a sensitivity to the peptide itself or another formula component
  • Stinging around the eyes if the product is applied too close to the lash line
  • Increased irritation when layered with strong exfoliating acids or retinoids in the same routine

If you notice any of these effects discontinue use and get advice from a healthcare professional or dermatologist.

Comedogenic Rating

Rating: 0 / 5

Oligopeptide-98 Amide is a small water soluble peptide with no oily or waxy residues so it does not block pores or create films that trap dead cells. Most formulas using this ingredient are lightweight serums or gels that rinse cleanly off the skin’s surface which keeps the clogging risk minimal.

Because of its zero rating this peptide is considered suitable for people who are prone to acne or frequent breakouts.

No known interactions with common acne medications have been reported though irritation can still occur if combined with very strong exfoliants.

Summary

Oligopeptide-98 Amide works as an anti sebum regulator, antimicrobial agent, antioxidant and skin protector. By signaling oil glands to dial back production it helps manage shine, its antimicrobial action keeps breakout causing bacteria in check, its antioxidant activity mops up everyday free radicals and its barrier support keeps moisture in so skin stays balanced.

While not yet a household name the peptide is gaining traction in Korean inspired oil control serums and is slowly appearing in global brands as manufacturing costs drop.

Current safety data point to a very low risk of irritation or pore clogging but everyone’s skin is unique so it is always smart to patch test a new product before full use.

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