Squalane is permitted by the US FDA. Several countries restrict, warning-label, or have reviewed it for safety concerns. The US has more lenient additive rules than the EU, UK, Canada, and Japan, which is why this ingredient remains widely used here.
Squalane has an outstanding safety profile with essentially no identified risks at cosmetic use levels. The CIR has confirmed its safety. It is non-comedogenic, non-irritating, and suitable for sensitive, acne-prone, and barrier-compromised skin. No carcinogenic or endocrine effects are documented. Sustainability is a concern if derived from shark liver oil (now rare); ethical consumers should verify plant-derived sources.
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