Ingredient review
Methionyl SH-Oligopeptide-1 SR-Jellyfish Polypeptide-1
INCI: METHIONYL SH-OLIGOPEPTIDE-1 SR-JELLYFISH POLYPEPTIDE-1
A novel peptide blend that may support skin firmness and hydration, but human research is very limited.
In plain English
This ingredient is a mix of two types of peptides: one is a lab-made signaling peptide (methionyl SH-oligopeptide-1) that tells skin cells to produce more collagen, and the other is a protein fragment from jellyfish (SR-jellyfish polypeptide-1) that may help hydrate and soothe. Peptides are short chains of amino acids that act like messengers in the skin. Because this is a newer ingredient, most of the evidence comes from lab studies or ingredient supplier tests, not large human trials.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is still emerging, so marketing claims deserve extra caution.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- semi synthetic
- Evidence
- emerging
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Methionyl SH-Oligopeptide-1 SR-Jellyfish Polypeptide-1 is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Methionyl SH-Oligopeptide-1 SR-Jellyfish Polypeptide-1.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
emergingThe ingredient may be promising, but claims should be treated more cautiously.
What it is
A semi-synthetic peptide complex combining a modified oligopeptide (a short chain of amino acids with methionine and a sulfur group) with a polypeptide derived from jellyfish. It is typically produced through biotechnology or chemical synthesis.
How it works
The methionyl oligopeptide portion is thought to mimic natural signaling molecules that stimulate collagen and elastin production in the skin. The jellyfish polypeptide may provide antioxidant and moisturizing effects by forming a protective film and supporting the skin's natural repair processes. Together, they aim to improve skin firmness and reduce fine lines.
Pros
Novel peptide technology
Combines two different peptide types for a multi-action approach to aging skin, potentially offering more than a single peptide.
Low irritation potential
Generally well-tolerated with a low risk of irritation or clogged pores, making it suitable for sensitive skin types.
Cons and cautions
Limited evidence
Most claims are based on in vitro or supplier studies; independent human trials are scarce, so the real-world effectiveness is not fully proven.
High cost
Products containing this ingredient are often premium-priced, which may not be justified given the lack of robust clinical data.
Best for
- People looking for advanced anti-aging ingredients
- Those with mature or sun-damaged skin seeking firmness
Use caution if
- Anyone with a known allergy to jellyfish or marine proteins
- Those on a very tight budget, as products with this ingredient tend to be expensive
Usage tips
Safety summary
Based on available data, this ingredient is considered safe for topical use in cosmetics at typical concentrations. Allergic reactions are rare but possible, especially in individuals with marine allergies. As with any new ingredient, patch testing is recommended.
Research notes
Evidence is primarily from ingredient supplier studies and a few small-scale trials. The methionyl oligopeptide has some support for collagen stimulation, while the jellyfish polypeptide shows antioxidant and moisturizing potential in lab models. More independent human studies are needed to confirm efficacy.
Common label clues
- Typical concentration
- Typically 0.1% to 1% in leave-on products
- Regulatory status
- Considered a cosmetic ingredient in the US and EU; not classified as a drug. No specific restrictions, but must comply with general cosmetic safety regulations.
- Common uses
- Anti-aging serums, Eye creams, Facial moisturizers
- Environmental note
- The jellyfish polypeptide is typically sourced from sustainably harvested jellyfish or produced via biotechnology to reduce environmental impact.
Good to know
- Peptides are fragile and can be destabilized by very low or high pH; look for products with a pH around 5-6.
- This ingredient is often found in luxury or 'medical-grade' skincare lines.
Common questions
What is Methionyl SH-Oligopeptide-1 SR-Jellyfish Polypeptide-1 in beauty products?
This ingredient is a mix of two types of peptides: one is a lab-made signaling peptide (methionyl SH-oligopeptide-1) that tells skin cells to produce more collagen, and the other is a protein fragment from jellyfish (SR-jellyfish polypeptide-1) that may help hydrate and soothe. Peptides are short chains of amino acids that act like messengers in the skin. Because this is a newer ingredient, most of the evidence comes from lab studies or ingredient supplier tests, not large human trials.
What does Methionyl SH-Oligopeptide-1 SR-Jellyfish Polypeptide-1 do in a beauty product?
The methionyl oligopeptide portion is thought to mimic natural signaling molecules that stimulate collagen and elastin production in the skin. The jellyfish polypeptide may provide antioxidant and moisturizing effects by forming a protective film and supporting the skin's natural repair processes. Together, they aim to improve skin firmness and reduce fine lines.
Is Methionyl SH-Oligopeptide-1 SR-Jellyfish Polypeptide-1 safe for most people?
Based on available data, this ingredient is considered safe for topical use in cosmetics at typical concentrations. Allergic reactions are rare but possible, especially in individuals with marine allergies. As with any new ingredient, patch testing is recommended.
Who should be careful with Methionyl SH-Oligopeptide-1 SR-Jellyfish Polypeptide-1?
Anyone with a known allergy to jellyfish or marine proteins Those on a very tight budget, as products with this ingredient tend to be expensive
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.