NEW Paula’s Choice PRO Retinaldehyde Dual-Retinoid Treatment Size 1 fl New never opened or used 0.1% retinaldehyde (retinal): Closest to prescription-strength retinoid delivers advanced results with minimal irritation 0.16% Adapinoid® (oleyl adapalenate): Oil-soluble retinoid promotes clear skin High potency, gentle release formula: Calcium-encapsulated retinoid minimizes irritation Natural bioactive yellow: Retinaldehyde has a naturally vibrant hue