betula verrucosa leaf extract; betula platyphylloides leaf extract; betula procurva subsp. lipskyi leaf extract; betula pseudopendula leaf extract; betula talassica leaf extract; betula verrucosa leaf extract; european birch leaf extract; weeping birch leaf extract; silver birch leaf extract (betula pendula); silver birch leaves extract; birch leaves extract HS 2429 G (Grau);birch leaves extract LS 4048 G (Grau) CAS NO:97552-99-3