Ingredient review
Hydroxycinnamoyl Dipeptide-27 Amide
INCI: HYDROXYCINNAMOYL DIPEPTIDE-27 AMIDE
A lab-made peptide that may help improve skin firmness and smooth fine lines, but human studies are still limited.
In plain English
This is a synthetic peptide, which is a short chain of amino acids (the building blocks of proteins). It is designed to mimic natural signals in the skin that encourage collagen production and strengthen the skin's support structure. In simple terms, it tells your skin to act younger and firmer. Because it is made in a lab, it is stable and can be added to skincare products at a consistent strength.
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
- synthetic
- Evidence
- emerging
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Hydroxycinnamoyl Dipeptide-27 Amide 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 Hydroxycinnamoyl Dipeptide-27 Amide.
- 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 molecule that combines a hydroxycinnamoyl group (a plant-derived antioxidant-like structure) with a dipeptide (two amino acids) and an amide modification to improve stability and skin penetration.
How it works
It is believed to work by signaling skin cells to produce more collagen and other structural proteins, similar to how natural peptides in the body trigger repair processes. The hydroxycinnamoyl part may also provide some antioxidant protection, helping to shield the skin from environmental damage that accelerates aging.
Pros
Gentle anti-aging support
This peptide is unlikely to cause irritation, making it a good option for sensitive skin types who want to address fine lines without redness or peeling.
Stable and consistent
Because it is synthetic, the ingredient is stable in formulations and delivers a predictable amount of active peptide with each use.
Cons and cautions
Limited human research
Most evidence comes from lab studies or small trials. Larger, long-term human studies are needed to confirm its effectiveness compared to well-studied peptides.
Subtle results
Peptides generally produce gradual, subtle improvements. Users expecting dramatic wrinkle reduction may be disappointed without consistent use over months.
Best for
- People looking for a gentle anti-aging ingredient that supports skin firmness
- Those with sensitive skin who cannot tolerate stronger actives like retinol
Use caution if
- Anyone with a known allergy or sensitivity to synthetic peptides (rare)
Usage tips
Safety summary
Considered safe for topical use in cosmetics at typical concentrations. No significant irritation or sensitization has been reported in available studies. As with any new ingredient, a patch test is recommended.
Research notes
Evidence is primarily from in vitro (lab) studies and a few small human trials. The peptide shows promise for collagen stimulation, but more robust clinical research is needed to confirm its anti-aging benefits.
Common label clues
- Typical concentration
- 0.1% to 1%
- Regulatory status
- Approved for use in cosmetics 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
- Synthetic peptides are produced in labs and do not rely on animal or plant harvesting, which reduces environmental impact compared to some natural extracts.
Good to know
- Peptides are often listed near the middle or end of ingredient lists because they are effective at low concentrations.
- This ingredient is not the same as hydroxycinnamic acid (a plant antioxidant) — it is a modified peptide.
Common questions
What is Hydroxycinnamoyl Dipeptide-27 Amide in beauty products?
This is a synthetic peptide, which is a short chain of amino acids (the building blocks of proteins). It is designed to mimic natural signals in the skin that encourage collagen production and strengthen the skin's support structure. In simple terms, it tells your skin to act younger and firmer. Because it is made in a lab, it is stable and can be added to skincare products at a consistent strength.
What does Hydroxycinnamoyl Dipeptide-27 Amide do in a beauty product?
It is believed to work by signaling skin cells to produce more collagen and other structural proteins, similar to how natural peptides in the body trigger repair processes. The hydroxycinnamoyl part may also provide some antioxidant protection, helping to shield the skin from environmental damage that accelerates aging.
Is Hydroxycinnamoyl Dipeptide-27 Amide safe for most people?
Considered safe for topical use in cosmetics at typical concentrations. No significant irritation or sensitization has been reported in available studies. As with any new ingredient, a patch test is recommended.
Who should be careful with Hydroxycinnamoyl Dipeptide-27 Amide?
Anyone with a known allergy or sensitivity to synthetic peptides (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.