THI-VEX™ Silicone Thickener is a liquid additive made especially for thickening Smooth-On’s Mold Max™ Series (tin catalyst), Smooth-Sil™ Series (platinum catalyst) Rebound™ 25 (platinum catalyst) and Dragon Skin™ Series (platinum catalyst) silicone for vertical surface application (making brush-on molds). Different viscosities can be attained by varying the amount of THI-VEX™. THI-VEX™ is skin safe and certified by an independent laboratory.

NOTE: THI-VEX™ is not compatible with Mold Max™ 40, Mold Max™ 60 or OOMOO™ silicone rubbers. THI-VEX™ is added as a percentage of Part A and must be thoroughly mixed with Parts A and B.