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Skin Conditioning

SH-POLYPEPTIDE-39

Updated
70

Safety score · 0–100

Fine

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

A lab-made copy of interleukin-9, a human immune-signalling protein. Used in trace amounts for skin conditioning. Tolerated at cosmetic levels but the biology is potent and human data is thin.

Function

SKIN CONDITIONING

Skin benefits

  • Skin conditioning at low cosmetic concentrations
  • Bioengineered IL-9 analogue
  • Targeted use in specialist formulations

Known concerns

  • IL-9 is an immune cytokine
  • Limited independent dermal safety data
  • Manufacturing purity supplier-dependent

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

Related skin conditionings

70
(ANGELICA ACUTILOBA/PAEONIA LACTIFLORA) ROOT/CNIDIUM OFFICINALE RHIZOME EXTRACT
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(ARNICA MONTANA/CALENDULA OFFICINALIS/MATRICARIA CHAMOMILLA) FLOWER EXTRACT
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 70
(ARTEMISIA SIEVERSIANA/DIMOCARPUS LONGANA) FLOWER/LEAF/STEM EXTRACT
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 70
(ASPARAGUS COCHINCHINENSIS/LIRIOPE MUSCARI/REHMANNIA CHINENSIS) ROOT EXTRACT
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 70
(CNIDIUM OFFICINALE/COPTIS CHINENSIS/GLYCYRRHIZA URALENSIS) ROOT EXTRACT
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 70
(VETIVERIA ZIZANOIDES ROOT/PUERARIA THUNBERGIANA FLOWER/LEAF/STEM) WATER
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 70
1,3-Dihydroxy-2-propanone
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 70
ABIES ALBA WOOD EXTRACT
Skin Conditioning

Check your shelf

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.