Potato 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: July 1, 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 Potato Sh-Oligopeptide-1?

Potato Sh-Oligopeptide-1 is a short chain of amino acids identical to epidermal growth factor, but grown inside specially bred potatoes rather than taken from animal or human sources. Scientists inserted the gene that tells cells to make Oligopeptide-1 into food grade potato plants, allowing the tubers to produce the peptide naturally. Once harvested the potatoes are mashed, the peptide is extracted with water based solvents, then filtered and purified until only the active ingredient remains. Finally it is stabilized so it stays potent when mixed into creams and serums.

Laboratories first worked with animal derived growth factors in the late 1960s for wound care. High cost and ethical questions pushed researchers to look for plant based production in the 2000s. Potatoes proved ideal because they grow quickly, store well and already have a place in the food supply. The resulting transgenic potato peptide offered a reliable vegan friendly source that could be used safely on skin.

Today you will usually see Potato Sh-Oligopeptide-1 in leave on products that aim to improve skin strength such as anti aging serums, lightweight moisturizers, sheet masks, post sun soothing gels and targeted eye treatments.

Potato Sh-Oligopeptide-1’s Cosmetic Benefits/Uses

This ingredient is valued for one core job in skincare.

Skin protecting: The peptide signals surface cells to renew more efficiently which encourages a smoother intact barrier. A healthier barrier loses less moisture, stands up better to pollution and feels calmer after minor stress like exfoliation or sun exposure. By keeping the outer layer resilient it supports an overall look of well hydrated comfortable skin.

Who Can Use Potato Sh-Oligopeptide-1

Because it is lightweight and water based, Potato Sh-Oligopeptide-1 suits most skin types including dry, normal, combination and oily complexions. Sensitive skin generally tolerates it well since the molecule is bioidentical to a substance already found in the body and the finished ingredient is purified to remove irritants. There is no known reason to avoid it if you are acne prone although the rest of the formula still matters.

The peptide is produced inside food grade potatoes so it is free from animal inputs and is therefore appropriate for vegans and vegetarians looking for a cruelty free alternative to growth factors sourced from animals or donated tissue.

Current research has not flagged any specific risks for pregnant or breastfeeding women when the peptide is used topically. That said, safety data in these groups is limited. This information is not medical advice and anyone who is expecting or nursing should run new skincare products past a qualified doctor just to be on the safe side.

Potato Sh-Oligopeptide-1 does not make skin more sensitive to sunlight so extra sun precautions beyond your normal broad-spectrum sunscreen routine are not required. It also plays well with most other actives such as niacinamide and hyaluronic acid, though manufacturers often place it in the calming phase of a routine rather than pairing it with strong exfoliating acids that could mask its soothing effect.

Potential Side Effects/Adverse Reactions

Reactions to topical Potato Sh-Oligopeptide-1 differ from person to person. The points below list potential issues yet most users will not encounter them provided the product is well formulated and used as directed.

  • Transient redness or warmth a short-lived flush as skin adjusts to a new bioactive
  • Mild itching or stinging usually when applied on freshly exfoliated or compromised skin
  • Localized irritation in rare cases of sensitivity to the carrier ingredients rather than the peptide itself
  • Allergic contact dermatitis extremely uncommon but possible if someone is allergic to potato proteins that remain as trace impurities
  • Breakouts not due to the peptide but to rich bases or occlusive oils sometimes used in the same formula which can clog pores in acne prone users
  • Reduced effectiveness of other actives if layered immediately after low-pH acids or high-dose retinoids which can destabilize peptides

If any negative reaction occurs stop using the product and consult a healthcare professional for personalised advice.

Comedogenic Rating

Rating: 0/5 Potato Sh-Oligopeptide-1 is a tiny water soluble protein fragment that contains no oils or waxes so it does not sit inside pores or create an occlusive film that could trap debris. Formulators usually add it at low percentages within light serums or gels which further limits any clogging risk. Trace potato proteins that ride along with the peptide are present in parts-per-million levels and are too small to block follicles.

Because of this profile the ingredient is generally suitable for people who are prone to acne or breakouts.

Only if the finished formula relies on heavy emollients for texture could comedogenicity creep in so always judge the whole product rather than the peptide alone.

Summary

Potato Sh-Oligopeptide-1 acts primarily as a skin protecting signal peptide that nudges surface cells to renew efficiently. By encouraging fresh orderly cell turnover it helps reinforce the outer barrier so skin holds moisture better resists daily irritants and feels calmer after minor stress. Its vegan origin from gene edited potatoes makes it an ethical alternative to animal growth factors and its tiny size lets it slip easily into lightweight formulas.

While not yet a mainstream buzzword it is gaining quiet popularity in niche anti-aging serums eye gels and post-procedure soothing products where gentle barrier support is prized. Safety data so far looks reassuring with few reports of irritation or allergy.

Overall it is considered safe for topical use on most skin types. As with any new skincare ingredient it is wise to do a quick patch test when first trying a product that contains Potato Sh-Oligopeptide-1 just to be on the safe side.

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