Ingredient review
RH-Polypeptide-94
INCI: RH-Polypeptide-94
RH-Polypeptide-94 is a synthetic peptide that may help firm skin and soften fine lines, but research is still early.
In plain English
RH-Polypeptide-94 is a man-made protein fragment designed to mimic natural signaling molecules in your skin. When applied in a cream or serum, it tells skin cells to produce more collagen and elastin, which are the building blocks that keep skin plump and springy. Think of it as a tiny messenger that encourages your skin to act younger. Because it's made in a lab, it's very pure and unlikely to cause irritation.
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
RH-Polypeptide-94 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-94.
- 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
RH-Polypeptide-94 is a recombinant (lab-created) peptide, meaning it's a short chain of amino acids engineered to be identical to a specific human signaling peptide. It belongs to a class of ingredients called 'matrikines' that are designed to trigger repair and renewal in the skin's extracellular matrix.
How it works
When applied topically, RH-Polypeptide-94 binds to receptors on skin cells (fibroblasts) and signals them to increase production of collagen, elastin, and other supportive proteins. This helps strengthen the skin's structure, leading to improved firmness and a reduction in the appearance of fine lines over time.
Pros
Gentle on skin
Because it's a synthetic peptide identical to a natural one, it's very unlikely to cause stinging, redness, or irritation, making it suitable for sensitive skin types.
Targets aging at the source
Rather than just hydrating the surface, it works deeper by encouraging your skin's own collagen production, which can lead to more lasting firmness.
Cons and cautions
Results take time
Peptides work slowly. You may need to use a product consistently for 8–12 weeks before noticing visible changes in firmness or wrinkle depth.
Limited independent research
Most evidence for RH-Polypeptide-94 comes from manufacturer studies. More peer-reviewed, independent human trials would help confirm its effectiveness.
Best for
- Anyone looking for a gentle anti-aging ingredient
- People with sensitive skin who want to avoid stronger actives like retinol
Use caution if
- Those seeking immediate or dramatic results (peptides work gradually)
Usage tips
Safety summary
RH-Polypeptide-94 is considered safe for topical cosmetic use. It has a low irritation and comedogenic risk. No significant safety concerns have been reported in available literature.
Research notes
Evidence is primarily from manufacturer-sponsored studies showing collagen stimulation in cell cultures and small human trials. More independent, peer-reviewed research is needed to fully establish efficacy.
Common label clues
- Typical concentration
- Typically used at 0.1% to 1% in leave-on products
- Regulatory status
- Approved for cosmetic use in the US, EU, and other major markets. Not classified as a drug ingredient.
- Common uses
- Anti-aging serums, Firming creams, Eye treatments
- Environmental note
- As a lab-synthesized ingredient, it does not rely on animal or plant harvesting, which reduces ecological impact compared to some natural extracts.
Good to know
- Peptides are most effective when formulated at the right pH (typically slightly acidic).
- RH-Polypeptide-94 is often listed near the middle or end of an ingredient list, which is normal for active peptides.
Common questions
What is RH-Polypeptide-94 in beauty products?
RH-Polypeptide-94 is a man-made protein fragment designed to mimic natural signaling molecules in your skin. When applied in a cream or serum, it tells skin cells to produce more collagen and elastin, which are the building blocks that keep skin plump and springy. Think of it as a tiny messenger that encourages your skin to act younger. Because it's made in a lab, it's very pure and unlikely to cause irritation.
What does RH-Polypeptide-94 do in a beauty product?
When applied topically, RH-Polypeptide-94 binds to receptors on skin cells (fibroblasts) and signals them to increase production of collagen, elastin, and other supportive proteins. This helps strengthen the skin's structure, leading to improved firmness and a reduction in the appearance of fine lines over time.
Is RH-Polypeptide-94 safe for most people?
RH-Polypeptide-94 is considered safe for topical cosmetic use. It has a low irritation and comedogenic risk. No significant safety concerns have been reported in available literature.
Who should be careful with RH-Polypeptide-94?
Those seeking immediate or dramatic results (peptides work gradually)
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.