Ingredient review
Glycyl SH-Oligopeptide-4
INCI: Glycyl SH-Oligopeptide-4
A synthetic peptide that may help support collagen and skin repair, but human data is still limited.
In plain English
This is a lab-made peptide (a small protein fragment) that is often paired with copper to help signal skin cells to produce more collagen and repair damage. It's used in anti-aging products to potentially improve firmness and reduce fine lines, but results vary and strong clinical proof is still emerging.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Glycyl SH-Oligopeptide-4 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 Glycyl SH-Oligopeptide-4.
- 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
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A synthetic oligopeptide (short chain of amino acids) modified with a glycyl group and a thiol (SH) group, often complexed with copper to enhance stability and activity.
How it works
It is thought to mimic natural peptide signals that tell skin cells to ramp up collagen and elastin production, and to support wound healing processes. The copper component may also act as an antioxidant.
Pros
Collagen support
May help stimulate collagen synthesis, which can improve skin firmness over time.
Low irritation risk
Generally well-tolerated, even for sensitive skin types, when used at recommended concentrations.
Cons and cautions
Limited human evidence
Most supporting data comes from lab or animal studies; robust clinical trials in humans are sparse.
Variable results
Effectiveness depends heavily on formulation, concentration, and individual skin response.
Best for
- People looking for anti-aging support
- Those with mild to moderate skin laxity
Use caution if
- Individuals with known sensitivity to peptides or copper
Usage tips
Safety summary
Considered safe for topical cosmetic use at typical concentrations. Rare reports of mild irritation exist, but overall risk is low.
Research notes
In vitro and some small human studies suggest potential benefits for collagen synthesis and skin repair, but large-scale, peer-reviewed clinical trials are still lacking.
Common label clues
- Typical concentration
- 0.1% to 1%
- Regulatory status
- Generally recognized as safe for cosmetic use in the EU, US, and other major markets when used as directed.
- Common uses
- Anti-aging serums, Eye creams, Firming lotions
- Environmental note
- Synthetic peptides are produced in labs, which reduces the need for natural resource extraction, but their manufacturing energy footprint is not well documented.
Good to know
- Often paired with copper for enhanced activity, but not all products disclose the copper complex.
- Peptides work best as part of a consistent routine over several weeks.
Common questions
What is Glycyl SH-Oligopeptide-4 in beauty products?
This is a lab-made peptide (a small protein fragment) that is often paired with copper to help signal skin cells to produce more collagen and repair damage. It's used in anti-aging products to potentially improve firmness and reduce fine lines, but results vary and strong clinical proof is still emerging.
What does Glycyl SH-Oligopeptide-4 do in a beauty product?
It is thought to mimic natural peptide signals that tell skin cells to ramp up collagen and elastin production, and to support wound healing processes. The copper component may also act as an antioxidant.
Is Glycyl SH-Oligopeptide-4 safe for most people?
Considered safe for topical cosmetic use at typical concentrations. Rare reports of mild irritation exist, but overall risk is low.
Who should be careful with Glycyl SH-Oligopeptide-4?
Individuals with known sensitivity to peptides or copper
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.