natural dyes
... that early dyers combined natural dyes with salt, vinegar, natural alum or stale urine?
... that early <a href="./Dye" id="mwCxM" rel="mw:WikiLink" title="Dye">dyers</a> combined <b id="mwCxQ"><a href="./Natural_dye" id="mwCxU" rel="mw:WikiLink" title="Natural dye">natural dyes</a></b> with <a href="./Salt" id="mwCxY" rel="mw:WikiLink" title="Salt">salt</a>, <a href="./Vinegar" id="mwCxc" rel="mw:WikiLink" title="Vinegar">vinegar</a>, natural <a href="./Alum" id="mwCxg" rel="mw:WikiLink" title="Alum">alum</a> or stale <a href="./Urine" id="mwCxk" rel="mw:WikiLink" title="Urine">urine</a>?