** Expiry Date: 1/8/2026 ** Features: - This product is used to isolate soft tissues (gums and cheeks) during procedures, commonly employed in dental office whitening procedures to ensure the integrity of oral soft tissues. - The light-curable gingival barrier is a mono-metric resin that, when exposed to blue light (light-curing unit), initiates the polymerization process, a chain reaction that increases the molecular weight, "hardening" the product.