Ingredient review
Nicotiana Benthamiana Hexapeptide-40
INCI: Nicotiana Benthamiana Hexapeptide-40, SH-Polypeptide-6
A plant-derived peptide that may help smooth fine lines and support collagen, but research is still early.
In plain English
This ingredient is a small protein fragment (a peptide) made in a lab using a tobacco plant called Nicotiana benthamiana. In skincare, it's added to products like serums and creams to encourage your skin to act firmer and smoother. Think of it as a gentle signal that tells your skin cells to behave more youthfully, though it's not a quick fix and works best with consistent use over time.
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
- biotech
- Evidence
- emerging
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Nicotiana Benthamiana Hexapeptide-40 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 Nicotiana Benthamiana Hexapeptide-40.
- 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 synthetic peptide produced via biotechnology in a tobacco plant host. It is a hexapeptide (six amino acids long) combined with a longer polypeptide chain, designed to mimic natural signaling molecules in the skin.
How it works
It is believed to interact with skin cells to promote the production of collagen and other structural proteins, helping to improve skin firmness and reduce the appearance of fine lines and wrinkles. The peptide acts as a messenger, encouraging the skin's natural repair processes.
Pros
Gentle anti-aging support
This peptide is considered low-irritation and can be used daily without causing redness or peeling, making it suitable for sensitive skin types.
Biotech sustainability
Produced via plant-based biotechnology, it avoids animal-derived ingredients and can be made with a lower environmental footprint than some synthetic peptides.
Cons and cautions
Limited research
Most evidence comes from lab studies or small trials; large-scale human studies are lacking, so the real-world effectiveness is not fully proven.
Higher price point
Because it's made through specialized biotech processes, products containing this peptide tend to be more expensive than those with more common peptides.
Best for
- Anyone looking for a gentle anti-aging ingredient
- People with sensitive skin who want to avoid harsh actives
Use caution if
- Those allergic to tobacco or related plants (rare)
Usage tips
Safety summary
This peptide is considered safe for topical use with a low risk of irritation or allergy. No significant safety concerns have been reported in cosmetic concentrations.
Research notes
Early research suggests potential benefits for skin firmness and wrinkle reduction, but most studies are small or lab-based. More robust clinical trials are needed to confirm efficacy.
Common label clues
- Typical concentration
- 0.1% to 1%
- Regulatory status
- Generally recognized as safe for cosmetic use in the US and EU when used as directed. Not a drug ingredient.
- Common uses
- Anti-aging serums, Firming creams, Eye treatments
- Environmental note
- Produced via plant-based biotechnology, which can be more sustainable than traditional chemical synthesis, though specific sourcing varies by manufacturer.
Good to know
- This peptide is often combined with other anti-aging ingredients like niacinamide or hyaluronic acid for enhanced benefits.
- It is not a sunscreen and does not replace SPF protection.
Common questions
What is Nicotiana Benthamiana Hexapeptide-40 in beauty products?
This ingredient is a small protein fragment (a peptide) made in a lab using a tobacco plant called Nicotiana benthamiana. In skincare, it's added to products like serums and creams to encourage your skin to act firmer and smoother. Think of it as a gentle signal that tells your skin cells to behave more youthfully, though it's not a quick fix and works best with consistent use over time.
What does Nicotiana Benthamiana Hexapeptide-40 do in a beauty product?
It is believed to interact with skin cells to promote the production of collagen and other structural proteins, helping to improve skin firmness and reduce the appearance of fine lines and wrinkles. The peptide acts as a messenger, encouraging the skin's natural repair processes.
Is Nicotiana Benthamiana Hexapeptide-40 safe for most people?
This peptide is considered safe for topical use with a low risk of irritation or allergy. No significant safety concerns have been reported in cosmetic concentrations.
Who should be careful with Nicotiana Benthamiana Hexapeptide-40?
Those allergic to tobacco or related plants (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.