Feruloyl Oligopeptide-33: 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 27, 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 Feruloyl Oligopeptide-33?

Feruloyl Oligopeptide-33 is a hybrid molecule formed when ferulic acid, a plant-derived antioxidant found in grains like rice and oats, chemically links with a short chain of amino acids known as Oligopeptide-33. By joining the protective power of ferulic acid with the skin-friendly nature of peptides, chemists created an ingredient that can support skin care goals in a single step.

The concept of bonding antioxidants to peptides gained attention in the early 2000s as formulators looked for ways to improve stability and boost skin affinity. Feruloyl Oligopeptide-33 emerged from this research as a lab-synthesized material produced through controlled enzymatic or chemical coupling. First, ferulic acid is activated to form a reactive intermediate. Next, it is attached to Oligopeptide-33 under monitored temperature and pH. The result is a water-dispersible powder that dissolves easily into creams, gels or serums.

You can now spot Feruloyl Oligopeptide-33 in a range of topical products such as daily moisturizers, age-defying serums, sheet masks and targeted treatments meant to soothe irritated or stressed skin. Its dual nature makes it a flexible choice for formulas that aim to condition skin while offering a touch of antioxidant care.

Feruloyl Oligopeptide-33’s Cosmetic Benefits/Uses

In skin care Feruloyl Oligopeptide-33 serves a single but valuable role.

As a skin conditioning agent it helps keep the surface of the skin soft smooth and healthy looking. The peptide portion supports the skin’s natural barrier while the attached ferulic acid lends mild protective benefits against everyday environmental stress. When blended into a formula it can enhance overall feel add a light moisture boost and leave the complexion appearing more supple and calm.

Who Can Use Feruloyl Oligopeptide-33

This ingredient suits most skin types including normal, dry, combination, oily and even sensitive because it is lightweight non-occlusive and has a low likelihood of clogging pores. People with very reactive or allergy-prone skin should still watch for any personal sensitivities to ferulic acid derivatives or peptides but no broad user group is automatically excluded.

Feruloyl Oligopeptide-33 is generally considered vegan and vegetarian friendly. Ferulic acid can be sourced from plants and the peptide portion is created by laboratory synthesis rather than animal tissue. As always check the final product for animal-derived additives such as beeswax or collagen if a fully vegan routine is required.

Current data does not show any specific risk for women who are pregnant or breastfeeding when the ingredient is applied topically at the low percentages used in cosmetics. Absorption through intact skin is minimal and the molecules are not known endocrine disruptors. This is not medical advice and anyone who is pregnant or nursing should review all skincare products with a qualified healthcare provider to be extra safe.

Feruloyl Oligopeptide-33 does not cause photosensitivity. Sunscreen is still recommended during the day as part of a complete routine but you do not need extra sun protection because of this ingredient.

Potential Side Effects/Adverse Reactions

Individual responses to topical Feruloyl Oligopeptide-33 can differ. The points below outline potential but uncommon reactions assuming the finished product has been formulated and stored properly.

  • Mild redness or warmth transient flushing may occur in very sensitive skin after application
  • Stinging or tingling a brief prickly sensation can appear especially on compromised or freshly exfoliated skin
  • Contact dermatitis rare cases of itching swelling or hives could develop if a person is allergic to ferulic acid derivatives or certain peptide sequences
  • Interaction with highly acidic products when layered with strong acids the peptide bond can break down leading to irritation or reduced performance

If you experience any discomfort rash or persistent irritation stop using the product and consult a healthcare professional.

Comedogenic Rating

Rating: 0/5  Feruloyl Oligopeptide-33 is water dispersible and contains no heavy oils waxes or fatty acids that tend to block pores. Its small peptide-based structure absorbs easily and leaves little residue, making it virtually non-comedogenic. Because of this profile it is generally considered suitable for acne-prone or breakout-prone skin. No data suggest it worsens congestion even in oily complexions. If a finished product that includes this ingredient feels greasy or occlusive the comedogenic potential is more likely due to other components in the formula rather than Feruloyl Oligopeptide-33 itself.

Summary

Feruloyl Oligopeptide-33 primarily acts as a skin conditioning agent that softens, smooths and supports the natural moisture barrier. The peptide fraction helps reinforce surface proteins while the attached ferulic acid contributes antioxidant protection against routine environmental stress. Together they keep skin comfortable and better equipped to handle daily wear.

This hybrid is still a niche ingredient so you will not see it in every serum or cream on store shelves, but formulators who want lightweight conditioning with a touch of antioxidant appeal are starting to give it a closer look.

Safety data so far are positive. Topical use at common cosmetic levels shows a very low risk of irritation or sensitisation, plus it carries no known reproductive or hormonal concerns. As with any new skincare item it is wise to do a quick patch test before full-face application to confirm personal tolerance.

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