direct to your inboxShoppers at Tesco, Morrisons, Waitrose and Boots have been warned not to use a popular laundry detergent over fears it could contain dangerous levels of potassium hydroxide.Select bottles of Ecover 1.5 litre zero non-bio laundry liquid have been pulled from shelves after it was discovered they may contain high levels of the chemical - which could burn the skin.A statement from the Ecover manufacturer states: "We strongly advise consumers not to open or use the affected