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1-NAPHTHALENEACETIC ACID.

Avoid CAS 86-87-3 / SKIN CONDITIONING

A synthetic auxin analog primarily known as a plant growth regulator that demonstrates cellular anti-apoptotic properties in human cell cultures. Research indicates potential anti-inflammatory activity through phospholipase A2 inhibition, though its application in skincare remains experimental.

Anti-apoptotic agent Potential anti-inflammatory Cellular longevity support

Science

Functions by upregulating ANGPTL4 gene expression to inhibit programmed cell death while simultaneously blocking phospholipase A2 activity, potentially reducing inflammatory cascade activation and supporting cellular longevity pathways.


Research

Low confidence
Effective range 20–100%
Optimal

N/A


Transparency

Not commonly dusted

Not established as a cosmetic ingredient; any presence would be experimental or mislabeling given its primary registration as a pesticide compound


The Formula

Solubility
Both
Optimal pH 3 – 5
0 7 14

Stability

Exhibits pronounced photosensitivity requiring UV protection, particularly unstable in alkaline conditions with tendency toward decarboxylation; pKa 4.23-4.24 favors acidic formulations

Conflicts

  • Strong oxidizing agents
  • Alkaline ingredients
  • UV-generating actives
  • Sulfate-based compounds

Safety

CIR Status
Not reviewed
Pregnancy
Caution
Sensitization risk High

Classified as Category 2 skin irritant and Category 1 eye irritant under GHS; lacks cosmetic safety assessment and established dermal exposure limits for consumer products



Our Assessment

Avoid

Despite intriguing cellular mechanisms, safety classification as an irritant and lack of cosmetic regulatory approval make this unsuitable for skincare applications.


Related

Finding similar ingredients…


References