CASTANOPSIS SIEBOLDII LEAF EXTRACT is graded A (Safe) by Expert·ING, based on COSING regulatory data.

CASTANOPSIS SIEBOLDII LEAF EXTRACT

Safety grade: A

This extract comes from the leaves of the Japanese chinquapin tree and is used in skincare products for its potential antioxidant and soothing properties. It may help protect skin from environmental stressors and support overall skin comfort when included in formulas.

Graded using: COSING.

Last verified: June 9, 2026