Ingredient review
Nicotinoyl SH-Pentapeptide-4
INCI: Nicotinoyl SH-Pentapeptide-4
A lab-made peptide-vitamin hybrid that aims to mimic natural skin signals to help smooth lines and improve firmness, with generally low irritation risk.
In plain English
This ingredient is a man-made molecule that combines a small protein fragment (a peptide) with a form of vitamin B3. In skincare, it's used to encourage skin cells to act more like younger, firmer skin. Think of it as a gentle messenger that tells your skin to produce more collagen and other supportive structures, which can help reduce the look of fine lines over time.
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
Nicotinoyl SH-Pentapeptide-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 Nicotinoyl SH-Pentapeptide-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 peptide (a short chain of amino acids) that has been chemically linked to a niacin (vitamin B3) derivative. This combination is designed to improve the peptide's stability and its ability to signal skin cells.
How it works
Once applied to the skin, the peptide portion is thought to mimic a natural collagen fragment, which can signal fibroblasts (the cells that make collagen) to produce more collagen and other matrix proteins. The attached nicotinoyl group may help the peptide penetrate better and also provide antioxidant-like support, though the exact mechanism is still being studied.
Pros
Gentle on skin
Unlike some anti-aging ingredients, this peptide-vitamin hybrid is rarely irritating, making it suitable for sensitive skin types.
Targets multiple signs of aging
It may help with both fine lines and loss of firmness, offering a more comprehensive anti-aging benefit than a single-function ingredient.
Cons and cautions
Subtle results
Improvements in skin texture and firmness are typically gradual and modest, not the dramatic changes seen with stronger actives like retinoids.
Higher cost
Products containing this ingredient are often more expensive due to the complex synthesis process.
Best for
- People looking for a gentle anti-aging ingredient
- Those with sensitive skin who cannot tolerate stronger actives like retinol
Use caution if
- Anyone with a known allergy or sensitivity to peptides or niacinamide (though rare)
Usage tips
Safety summary
Nicotinoyl SH-Pentapeptide-4 is considered safe for cosmetic use at typical concentrations. It has a low irritation and comedogenic risk, and no significant safety concerns have been reported in available studies.
Research notes
Research on this specific peptide is limited compared to more established anti-aging peptides. Available studies, often funded by ingredient suppliers, suggest it can stimulate collagen production in lab settings and reduce wrinkle depth in small human trials. More independent, long-term studies are needed to confirm its efficacy.
Common label clues
- Typical concentration
- 0.1% to 2%
- Regulatory status
- Approved for cosmetic use in the EU, US, and other major markets. It is not a drug ingredient and cannot claim to treat or cure skin diseases.
- Common uses
- Anti-aging serums, Eye creams, Facial moisturizers
- Environmental note
- As a synthetic peptide, it is produced in a lab, which avoids the environmental impact of harvesting natural sources. However, the manufacturing process does require energy and chemical inputs.
Good to know
- This ingredient is often listed near the middle or end of an ingredient list because it is effective at low concentrations.
- It is compatible with most other skincare ingredients, including vitamin C and retinol.
Common questions
What is Nicotinoyl SH-Pentapeptide-4 in beauty products?
This ingredient is a man-made molecule that combines a small protein fragment (a peptide) with a form of vitamin B3. In skincare, it's used to encourage skin cells to act more like younger, firmer skin. Think of it as a gentle messenger that tells your skin to produce more collagen and other supportive structures, which can help reduce the look of fine lines over time.
What does Nicotinoyl SH-Pentapeptide-4 do in a beauty product?
Once applied to the skin, the peptide portion is thought to mimic a natural collagen fragment, which can signal fibroblasts (the cells that make collagen) to produce more collagen and other matrix proteins. The attached nicotinoyl group may help the peptide penetrate better and also provide antioxidant-like support, though the exact mechanism is still being studied.
Is Nicotinoyl SH-Pentapeptide-4 safe for most people?
Nicotinoyl SH-Pentapeptide-4 is considered safe for cosmetic use at typical concentrations. It has a low irritation and comedogenic risk, and no significant safety concerns have been reported in available studies.
Who should be careful with Nicotinoyl SH-Pentapeptide-4?
Anyone with a known allergy or sensitivity to peptides or niacinamide (though rare)
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.