| Rene Furterer's Astera No Rinse Soothing Serum Thanks to cold essential oils (Mint, Eucalyptus) and to the Asteracea extract, Astera No Rinse Soothing Serum immediately soothes the scalp and procures a sensation of freshness. Highly concentrated in repairing active ingredients, it also rebalances the sensitive and irritated areas of the scalp. Your scallp regains its comfort while being shielded against external aggressions. . |  |