Glutamylamidoethyl Indole
INCI: GLUTAMYLAMIDOETHYL INDOLE
Reviewed by Emma · Last updated 2 Jun 2026
A plant-derived protective ingredient that helps shield skin from environmental stress
Best For Skin Types
All, Sensitive, Combination
Addresses
Usage Frequency
Daily
What Is Glutamylamidoethyl Indole?
Glutamylamidoethyl indole is a naturally derived amino acid compound featuring an indole structure — a chemical scaffold found in certain plants, particularly in the brassica family. It functions as a skin-protecting agent in formulations.
This ingredient works at the skin's surface to help reinforce the skin's natural defences against environmental aggressors. It is typically used in small concentrations within skincare products designed to strengthen and support the skin's protective barrier.
How It Works
Glutamylamidoethyl indole is believed to operate as an antioxidant and protective agent. The indole moiety — the core chemical structure — has inherent antioxidant properties that may neutralise free radicals generated by environmental exposure, UV radiation, and pollution.
By protecting skin cells from oxidative damage, this ingredient may help preserve the integrity of the skin barrier and reduce inflammation triggered by environmental insult.
Clinical Evidence & References
The published evidence for glutamylamidoethyl indole specifically is limited. Most data comes from cosmetic ingredient databases and supplier claims rather than independent clinical trials in peer-reviewed journals.
General research on indole compounds suggests antioxidant potential, and the amino acid conjugation may improve skin penetration and stability. However, direct evidence of efficacy in human skin at typical cosmetic concentrations is not well established, and more rigorous clinical studies would help clarify its benefits.
How to Use
This ingredient is most effective as part of a comprehensive skincare routine that includes a broad-spectrum sunscreen and other well-established protective measures. It is typically found in serums, moisturisers, and protective creams rather than as a standalone product. No special application technique is required — use it as directed on the product label.
Safety & Precautions
Frequently Asked Questions
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