Ingredient review
Potato SH-Polypeptide-1
INCI: Potato SH-Polypeptide-1
A gentle, plant-based peptide that may help improve skin firmness, but research is still limited.
In plain English
Potato SH-Polypeptide-1 is a small protein fragment (peptide) derived from potatoes. In skincare, peptides act like messengers that tell skin cells to produce more collagen and elastin, which are the proteins that keep skin plump and firm. This particular peptide is made from potatoes, making it a plant-based alternative to synthetic or animal-derived peptides. While it shows promise for supporting skin structure, there is less scientific research on it compared to more established peptides like Matrixyl or copper peptides.
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
- natural
- Evidence
- emerging
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Potato SH-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 Potato SH-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 peptide (short chain of amino acids) extracted from potatoes, used in skincare to signal skin cells to boost collagen and elastin production.
How it works
When applied topically, the peptide is thought to bind to receptors on skin cells and stimulate them to produce more collagen and elastin, which can help reduce the appearance of fine lines and improve skin firmness over time.
Pros
Plant-derived and gentle
Sourced from potatoes, this peptide is a natural alternative that is unlikely to irritate even sensitive skin.
Supports skin structure
By encouraging collagen and elastin production, it may help maintain skin firmness and reduce fine lines over time.
Cons and cautions
Limited research
There are few peer-reviewed studies on Potato SH-Polypeptide-1 specifically, so its effectiveness is less established than other peptides.
Subtle effects
Results are gradual and subtle; it is not a quick fix for wrinkles or sagging skin.
Best for
- Anyone looking for a gentle, plant-derived anti-aging ingredient
- Those with sensitive skin who want to try peptides
Use caution if
- Those seeking immediate or dramatic results
- Anyone with a known allergy to potatoes (rare in topical use)
Usage tips
Safety summary
Potato SH-Polypeptide-1 is considered safe for topical use with a low risk of irritation or allergy. As with any new ingredient, a patch test is recommended for those with very sensitive skin.
Research notes
Research on this specific peptide is emerging. Most evidence is based on general peptide science and manufacturer studies rather than independent clinical trials. More studies are needed to confirm its efficacy.
Common label clues
- Typical concentration
- 0.1% to 1% in leave-on products
- Regulatory status
- Generally recognized as safe for cosmetic use; not a drug ingredient.
- Common uses
- Anti-aging serums, Firming creams, Eye treatments
- Environmental note
- Potatoes are a widely available crop, making this a relatively sustainable peptide source compared to animal-derived alternatives.
Good to know
- Peptides are often listed near the end of ingredient lists because they are effective at low concentrations.
- This ingredient is sometimes combined with other peptides or antioxidants for enhanced anti-aging benefits.
Common questions
What is Potato SH-Polypeptide-1 in beauty products?
Potato SH-Polypeptide-1 is a small protein fragment (peptide) derived from potatoes. In skincare, peptides act like messengers that tell skin cells to produce more collagen and elastin, which are the proteins that keep skin plump and firm. This particular peptide is made from potatoes, making it a plant-based alternative to synthetic or animal-derived peptides. While it shows promise for supporting skin structure, there is less scientific research on it compared to more established peptides like Matrixyl or copper peptides.
What does Potato SH-Polypeptide-1 do in a beauty product?
When applied topically, the peptide is thought to bind to receptors on skin cells and stimulate them to produce more collagen and elastin, which can help reduce the appearance of fine lines and improve skin firmness over time.
Is Potato SH-Polypeptide-1 safe for most people?
Potato SH-Polypeptide-1 is considered safe for topical use with a low risk of irritation or allergy. As with any new ingredient, a patch test is recommended for those with very sensitive skin.
Who should be careful with Potato SH-Polypeptide-1?
Those seeking immediate or dramatic results Anyone with a known allergy to potatoes (rare in topical use)
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.