Shellac
ConchiolinLac
Coating Agent
Shellac is a natural resin made from the secretions of the lac bug. It's often used to give food and cosmetics a shiny appearance.
Moderate Concern
Source: FDA GRAS list
The concern with shellac is that it may cause allergic reactions in some people, but it is generally considered safe by regulatory authorities.
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r/Nails
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Shellac allergy help!
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Last updated: May 16, 2026