Endura-Bond is well suited to accommodate a variety of surfaces and substrates. Use Endura-Bond sparingly for prostheses attachment. Unlike other adhesives that "fail" when exposed to moist conditions, Endura-Bond actually "cures" when exposed to water. Endura-Bond can be used in a variety of industries and is used extensively in the Hair Replacement Industry to provide "Permanent Attachment". Our Endura-Bond is sold in 1 and 2 oz. bottles. Each bottle has a screw-on lid which preserves the life of the adhesive and dispensing bottle. Made in a clean-room environment, our adhesive does NOT contain formaldehyde, lead or mercury. Strongly Recommend using a Support Tape over Lace Hair System. Never apply directly to lace. must use tape to protect lace. This is a professional product used by licensed Professional in the trade. We are not responsible for any damage caused by this product to your hair system or to yourself. Please follow directions received during your professional training. This is a great adhesive for the person who is experiencing problems with traditional "Soft Bond" adhesive. This product requires a "HARD BOND" remover. Traditional solvents such as C-22 will not do the job.