{"product_id":"watercolour-medium-ox-gall-liquid","title":"Ox Gall Liquid","description":"A wetting agent used for smooth washes and to enhance flow when mixed directly with watercolour. Reducing surface tension, It can also be used on very hard-sized paper. Add 3-4 drops per cup of water.","brand":"Winsor \u0026 Newton","offers":[{"title":"75ml","offer_id":45651479134357,"sku":"884955017944","price":18.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/6275\/9573\/files\/110544_c165bcaa-1a8d-491d-a80f-fea92f5eb025.jpg?v=1757429411","url":"https:\/\/www.winsornewton.com\/fr\/products\/watercolour-medium-ox-gall-liquid","provider":"Winsor \u0026 Newton NA","version":"1.0","type":"link"}