Last reviewed May 2026 · 1 min read
Is Guanine vegan?
Also known as: Pearl essence, CI 75170, Natural pearl essence
Not Vegan
Derived from animals — avoid.
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No — It is extracted by scraping the scales off dead fish (usually herring) and suspending them in alcohol.
01 · The basics
What is Guanine?
A crystalline material used in the cosmetics industry to give makeup a shimmery, pearlescent, or light-diffusing effect.
02 · The source
Where it comes from
It is extracted by scraping the scales off dead fish (usually herring) and suspending them in alcohol.
03 · Alternatives
Best vegan alternatives
Synthetic mica (Fluorphlogopite)
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Frequently asked
FAQ
Is the shimmer in my highlighter from fish scales?
If the ingredient list includes 'Guanine' or 'CI 75170', yes. However, many modern cosmetics now use synthetic mica or lab-created minerals for shimmer.
How can I avoid fish scales in my nail polish?
Look for nail polishes that are explicitly labeled as 'vegan'. These brands will use synthetic pearls or aluminum powder instead of guanine.
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