Declare Fluid - DECLARED - Hydro Boost Duo Care - 2x20ml - Fragrance-free - All skin typesfrom £34.70 up to £86.00 Compare prices7→The Hydro Boost Duo Care fluid from DECLARÉ, in a 2x20ml format, is suitable for all skin types.. Its fluid and fragrance-free texture hydrates deeply, offering optimal care for adult women.. The Sell more→er confirms that its products comply with all applicable laws and are only offered if they comply with Joom's policies and European laws on product safety and conformity.