Hexapeptide-58: 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 Hexapeptide-58?

Hexapeptide-58 is a lab-made chain of six amino acids made up of leucine, lysine, methionine, serine, threonine and valine. Because it is synthesized in controlled factory settings it offers consistent quality and purity, unlike some naturally derived peptides that can vary from batch to batch. Most manufacturers create it with solid-phase peptide synthesis, a widely used method that links each amino acid in a precise order, followed by filtration and purification steps to remove any residual solvents or by-products.

Peptides began gaining attention in skin care during the late 1990s when research showed these small protein fragments could signal skin cells to perform specific tasks. Hexapeptide-58 is one of the newer additions to this category and has found a place in formulas aimed at keeping skin firm and resilient. You will commonly spot it in serums, sheet masks, day and night moisturizers, targeted eye creams, neck and décolletage treatments and any product marketed for visible firming or smoothing benefits.

Hexapeptide-58’s Cosmetic Benefits/Uses

Hexapeptide-58 is primarily valued for one key role in skin care formulations

Skin Conditioning: By supporting the skin’s surface proteins it helps skin feel smoother, look more supple and maintain a healthy moisture balance. This conditioning effect can make fine lines appear less pronounced and give the complexion a fresher appearance over time.

Who Can Use Hexapeptide-58

Hexapeptide-58 is considered suitable for most skin types, including dry, balanced, oily and mature skin. Its lightweight, water-soluble profile means it rarely leaves a greasy after-feel, making it a good choice for combination or breakout-prone complexions as well. Those with very sensitive or highly reactive skin can usually tolerate it, although they may prefer formulas with fewer added fragrances or strong active ingredients.

The peptide is produced entirely through synthetic processes and contains no animal derivatives, which makes it compatible with vegan and vegetarian lifestyles.

Current research has not flagged any specific concerns for pregnant or breastfeeding women when using topical Hexapeptide-58. That said, this is not medical advice and anyone who is pregnant or nursing should check with a qualified healthcare professional before adding new skincare products to their routine.

Hexapeptide-58 is not known to cause photosensitivity, so it does not increase the skin’s vulnerability to sunburn. Standard daytime sun protection is still recommended for overall skin health.

Potential Side Effects/Adverse Reactions

Responses to Hexapeptide-58 vary from person to person. The following is a list of potential but uncommon side effects assuming the ingredient has been properly formulated and stored.

  • Mild redness
  • Temporary stinging or tingling immediately after application
  • Itching in individuals with very sensitive skin
  • Rare allergic contact dermatitis characterized by persistent redness or small bumps
  • Interactions with highly acidic formulas that could destabilize the peptide and reduce its effectiveness

If any unwanted reaction occurs stop using the product and consult a healthcare professional or dermatologist for guidance.

Comedogenic Rating

Rating: 0 out of 5

Hexapeptide-58 is a tiny water-soluble molecule that rinses clean and does not create an oily film, making it highly unlikely to block pores. Most formulations that use it are light lotions or serums that sit comfortably on the skin without trapping sebum or dead cells, so the peptide itself is classed as non-comedogenic.

This makes Hexapeptide-58 a safe pick for acne-prone or breakout-prone skin.

The only thing to watch is the overall formula. If the peptide is blended into a very rich cream packed with heavy butters or waxes, the finished product could still feel occlusive on oily skin even though the peptide is not the culprit.

Summary

Hexapeptide-58 is a synthetic chain of six amino acids that conditions skin, lending it a smoother texture, a springy feel and better moisture balance. By supporting surface proteins it helps fine lines look softer and keeps the complexion looking refreshed.

Though it has not hit the same level of fame as retinol or vitamin C, its gentle firming benefits and low irritation potential have carved out a growing fan base in serums, sheet masks and neck treatments.

Research to date points to a strong safety profile with minimal risk of pore clogging or sun sensitivity. Still, everyone’s skin is unique, so do a quick patch test with any new product containing Hexapeptide-58 to be sure it plays well with your complexion.

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