🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsSvenskaالعربيةفارسی한국어中文日本語EntityQ902175· pop 15· linked from 52 articlesoptical brightenerblue fluorescent dye used to enhance apparent brightness of white paper, fabric, and plasticsAvailable in 15 languagesEspañolFrançaisDeutsch中文日本語ItalianoالعربيةCatalanCzechDanishIrishConnectionspaperEntityfluorescenceEntityCategoriesCleaning product componentsFluorescent dyesLuminescencePapermakingProcess chemicals