This is a methanol cleaner and thinner for use on the Durtex line of textile stiffeners. It has a base of methanol so use in a well-ventilated area with gloves and mask. This can be used to clean tools used with the stiffener and remove stiffener from over concentrated areas of material. To remove any stiffener spots in sinamay or other fabric with more open weaves that have sealed over, use a toothbrush with a small amount of cleaner to wide away the excess stiffener. This thinner should not be used to dilute XTRA 36 or Duratex or the effectiveness can be compromised. The highest ratio of concentration that can be used without compromising the effectiveness is one part thinner to two parts stiffener. Available in 16 ounce and 8 ounce sizes.