Ingredient review
RH-Polypeptide-111
INCI: RH-Polypeptide-111
A synthetic peptide that may help reduce fine lines and improve skin firmness, but research is still emerging.
In plain English
RH-Polypeptide-111 is a lab-made chain of amino acids (the building blocks of protein) that signals your skin to produce more collagen and elastin. Think of it as a gentle messenger that tells your skin cells to repair and strengthen themselves. It's often used in anti-aging products to help smooth wrinkles and improve skin texture 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
RH-Polypeptide-111 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 RH-Polypeptide-111.
- 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, specifically a polypeptide, designed to mimic natural signaling molecules in the skin. It is often combined with copper to enhance its stability and effectiveness.
How it works
When applied topically, RH-Polypeptide-111 penetrates the outer layer of skin and binds to cell receptors, triggering a cascade of signals that encourage fibroblasts to produce more collagen and elastin. This helps plump the skin, reduce the appearance of fine lines, and support the skin's natural repair processes.
Pros
Gentle anti-aging support
Unlike stronger ingredients like retinol, RH-Polypeptide-111 is generally non-irritating and can be used daily without causing redness or peeling.
Backed by peptide science
Peptides are well-studied for their role in collagen signaling, and this ingredient follows that established mechanism, making it a reliable choice for anti-aging routines.
Cons and cautions
Results are gradual
You won't see dramatic changes overnight; consistent use over several weeks to months is needed for visible improvements in fine lines.
Limited direct research
While the broader peptide category is well-studied, specific human trials for RH-Polypeptide-111 are sparse, so its efficacy is inferred from similar peptides.
Best for
- People looking to reduce early signs of aging
- Those with dull or uneven skin texture seeking a gentle boost
Use caution if
- Individuals with very sensitive or reactive skin (patch test recommended)
- Those allergic to peptides or copper compounds
Usage tips
Safety summary
RH-Polypeptide-111 is considered safe for topical use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, but patch testing is advised for sensitive individuals.
Research notes
Peptides as a class have moderate evidence supporting collagen stimulation and anti-aging benefits. Direct studies on RH-Polypeptide-111 are limited, but its mechanism aligns with well-researched peptides like GHK-Cu.
Common label clues
- Typical concentration
- 0.1% to 1%
- Regulatory status
- Approved as a cosmetic ingredient in the US and EU; not classified as a drug. No specific restrictions beyond general cosmetic safety requirements.
- Common uses
- Anti-aging serums, Eye creams, Moisturizers
- Environmental note
- Synthetic peptides are produced through chemical synthesis, which has a lower environmental footprint than some natural extracts but still involves energy-intensive processes.
Good to know
- Peptides are often listed as 'palmitoyl' or 'acetyl' variants on labels; RH-Polypeptide-111 is a specific synthetic sequence.
- It is often combined with copper in formulations to enhance its activity.
Common questions
What is RH-Polypeptide-111 in beauty products?
RH-Polypeptide-111 is a lab-made chain of amino acids (the building blocks of protein) that signals your skin to produce more collagen and elastin. Think of it as a gentle messenger that tells your skin cells to repair and strengthen themselves. It's often used in anti-aging products to help smooth wrinkles and improve skin texture over time.
What does RH-Polypeptide-111 do in a beauty product?
When applied topically, RH-Polypeptide-111 penetrates the outer layer of skin and binds to cell receptors, triggering a cascade of signals that encourage fibroblasts to produce more collagen and elastin. This helps plump the skin, reduce the appearance of fine lines, and support the skin's natural repair processes.
Is RH-Polypeptide-111 safe for most people?
RH-Polypeptide-111 is considered safe for topical use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, but patch testing is advised for sensitive individuals.
Who should be careful with RH-Polypeptide-111?
Individuals with very sensitive or reactive skin (patch test recommended) Those allergic to peptides or copper compounds
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.