Ingredient review
Kojyl Carboxy SH-Oligopeptide-75 Amide
INCI: KOJYL CARBOXY SH-OLIGOPEPTIDE-75 AMIDE
A synthetic peptide that aims to brighten skin and reduce fine lines by combining a kojic acid-like signal with a collagen-supporting peptide.
In plain English
This ingredient is a lab-made molecule that pairs a piece of kojic acid (a natural brightener from mushrooms) with a short peptide chain. The idea is that the kojic part helps fade dark spots, while the peptide part signals skin to produce more collagen. It's a newer, more targeted approach to even out skin tone and soften wrinkles, but it hasn't been studied as extensively as older ingredients like vitamin C or retinol.
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
Kojyl Carboxy SH-Oligopeptide-75 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 Kojyl Carboxy SH-Oligopeptide-75 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 hybrid molecule: a kojic acid derivative (kojyl carboxy) chemically bonded to a specific oligopeptide (SH-oligopeptide-75 amide). This design aims to deliver both brightening and anti-aging benefits in one ingredient.
How it works
The kojic acid portion is thought to inhibit tyrosinase, an enzyme needed for melanin production, which can help reduce dark spots. The peptide portion is believed to mimic natural collagen fragments, signaling skin cells to boost collagen synthesis, which may improve firmness and reduce fine lines.
Pros
Dual-action ingredient
Combines brightening and anti-aging benefits in one molecule, potentially simplifying your routine.
Low irritation risk
Synthetic peptides are generally well-tolerated, and this ingredient is unlikely to cause stinging or redness, even for sensitive skin.
Cons and cautions
Limited research
There are few peer-reviewed studies on this exact molecule, so its real-world effectiveness is less proven than classic brighteners like vitamin C.
May be less potent
The kojic acid derivative may be weaker than pure kojic acid or other tyrosinase inhibitors, so results could be subtle.
Best for
- People with mild to moderate hyperpigmentation or sun spots
- Those looking for a gentle anti-aging peptide that also targets discoloration
Use caution if
- Anyone with a known allergy to kojic acid or peptides
- Pregnant or nursing individuals should consult a doctor before using new active ingredients
Usage tips
Safety summary
Considered safe for topical use at typical concentrations. No significant irritation or sensitization has been reported in available data. As with any new ingredient, patch testing is recommended.
Research notes
The ingredient is relatively new, and most evidence comes from in vitro studies and manufacturer data. Human trials are limited, but the individual components (kojic acid and peptides) have strong safety and efficacy profiles.
Common label clues
- Typical concentration
- 0.1% to 1%
- Regulatory status
- Approved for cosmetic use in the EU, US, and other major markets. Not classified as a drug ingredient.
- Common uses
- Serums, Moisturizers, Eye creams, Brightening treatments
- Environmental note
- Synthetically produced, so it does not rely on natural harvesting of kojic acid sources. No known significant environmental concerns.
Good to know
- This ingredient is often found in high-end serums and targeted treatments.
- It is water-soluble and can be formulated into clear gels or lightweight serums.
Common questions
What is Kojyl Carboxy SH-Oligopeptide-75 Amide in beauty products?
This ingredient is a lab-made molecule that pairs a piece of kojic acid (a natural brightener from mushrooms) with a short peptide chain. The idea is that the kojic part helps fade dark spots, while the peptide part signals skin to produce more collagen. It's a newer, more targeted approach to even out skin tone and soften wrinkles, but it hasn't been studied as extensively as older ingredients like vitamin C or retinol.
What does Kojyl Carboxy SH-Oligopeptide-75 Amide do in a beauty product?
The kojic acid portion is thought to inhibit tyrosinase, an enzyme needed for melanin production, which can help reduce dark spots. The peptide portion is believed to mimic natural collagen fragments, signaling skin cells to boost collagen synthesis, which may improve firmness and reduce fine lines.
Is Kojyl Carboxy SH-Oligopeptide-75 Amide safe for most people?
Considered safe for topical use at typical concentrations. No significant irritation or sensitization has been reported in available data. As with any new ingredient, patch testing is recommended.
Who should be careful with Kojyl Carboxy SH-Oligopeptide-75 Amide?
Anyone with a known allergy to kojic acid or peptides Pregnant or nursing individuals should consult a doctor before using new active ingredients
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.