R-Salmon Oligopeptide-1 Sh-Oligopeptide-1: 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
Share:
Inside this article:

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 R-Salmon Oligopeptide-1 Sh-Oligopeptide-1?

R-Salmon Oligopeptide-1 Sh-Oligopeptide-1 is a lab-made fusion peptide that blends two well-known skin-friendly sequences into one 63-amino-acid chain. Scientists start by designing a single gene that joins parts of the salmon-derived epidermal growth factor sequence with a short human oligopeptide sequence. This gene is inserted into a strain of E. coli, which then acts like a tiny factory, fermenting and pumping out large amounts of the peptide. After fermentation the peptide is purified, filtered and stabilized so it can be added to skin care formulas.

Peptide technology first caught the beauty industry’s eye in the early 2000s as brands looked for gentler options to support collagen and fight early signs of aging. As genetic engineering became more precise, labs found ways to combine peptide fragments for added benefits while keeping production cost-effective. R-Salmon Oligopeptide-1 Sh-Oligopeptide-1 is one of these next-generation ingredients and is now worked into lightweight serums, firming moisturizers, sheet masks, eye creams and soothing post-treatment gels.

R-Salmon Oligopeptide-1 Sh-Oligopeptide-1’s Cosmetic Benefits/Uses

This peptide offers two key actions that make it popular in modern skin care.

  • Antioxidant: Helps neutralize free radicals from pollution and UV exposure which can slow down the look of premature aging and dullness.
  • Skin protecting: Supports the skin’s natural barrier so moisture stays in and irritants stay out leading to a smoother more resilient complexion.

Who Can Use R-Salmon Oligopeptide-1 Sh-Oligopeptide-1

This peptide suits most skin types including dry, balanced, combination and oily because it is lightweight and non-greasy. Sensitive skin usually tolerates it well as it lacks common irritants such as fragrance, alcohol or exfoliating acids. There is no evidence that it is unsuitable for any particular skin type, though individuals with a known history of reacting to peptides or fermentation-derived ingredients should proceed carefully.

R-Salmon Oligopeptide-1 Sh-Oligopeptide-1 is produced entirely in a microbial fermentation system so no animal tissue is used during manufacturing. While the genetic blueprint comes from a salmon-derived sequence, the finished material never involves harvesting fish. Most vegans and vegetarians consider it acceptable, though strict lifestyle choices vary.

Current data does not show any specific risk for pregnant or breastfeeding women when the ingredient is applied topically, but research on expectant or nursing users is limited. This information is not medical advice. Anyone who is pregnant or nursing should consult a healthcare professional before adding new skincare products.

The peptide does not increase skin sensitivity to the sun and can be used morning or night without raising the need for extra sun protection beyond a daily SPF habit that dermatologists already recommend.

Potential Side Effects/Adverse Reactions

Responses to topical R-Salmon Oligopeptide-1 Sh-Oligopeptide-1 differ from person to person. The effects listed below are only possibilities and are unlikely for the average user when the ingredient is properly formulated.

  • Mild redness or warmth shortly after application
  • Transient tingling or itching on sensitive skin
  • Rare allergic contact dermatitis presenting as persistent rash or bumps
  • Eye irritation if the product accidentally migrates into the eyes
  • Interaction with leave-on acids or retinoids that could heighten dryness or flaking in very reactive skin

If any unwanted reaction occurs discontinue use and seek guidance from a healthcare professional.

Comedogenic Rating

Rating: 0/5 (non-comedogenic). R-Salmon Oligopeptide-1 Sh-Oligopeptide-1 is a water-soluble peptide with no oils, waxes or fatty alcohols that could clog pores. It is typically used at low concentrations in lightweight formulas and is easily rinsed from the skin, so it does not linger inside follicles or mix with sebum in a way that would encourage breakouts. For these reasons it is generally considered safe for acne-prone or congestion-prone skin.

Because the ingredient is non-occlusive it often appears in oil-free serums designed specifically for blemish-prone complexions, sometimes alongside niacinamide or salicylic acid to create a balanced regimen.

Summary

R-Salmon Oligopeptide-1 Sh-Oligopeptide-1 is a lab-crafted fusion peptide that delivers antioxidant protection and barrier support. By neutralizing free radicals it helps slow the look of premature aging while its skin-protecting action reinforces the moisture barrier so skin feels stronger and smoother.

Although not a household name like hyaluronic acid, the peptide is gaining quiet popularity among formulators who want a gentle multitasker that plays well with both soothing and active ingredients. You will mostly find it in mid to higher-end serums, eye treatments and post-procedure gels.

Current research and user reports show it to be very low risk with only rare instances of irritation or allergy. As with any new skincare product, performing a quick patch test is wise before applying it over larger areas.

Was this article helpful?
More from Glooshi:
ADVERTISEMENT
Get all our top headlines in beauty.
Delivered right to your inbox each week. Zero spam, all goodness, opt-out at anytime.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Get the latest beauty news, top product recommendations & brand-exclusive discount codes direct to your inbox.
Send good feedback:

All feedback is greatly appreciated, anonymous, and will be used to improve the quality of our articles.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Send bad feedback:

All feedback is greatly appreciated, anonymous, and will be used to improve the quality of our articles.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Search