Epres bond repair kit keeps hair and nails strong. It features concentrate refills to reduce waste by reusing the spray bottle. Simply pour the contents of one vial into your epres spray bottle, fill with water, attach the sprayer and shake well. This exclusive refill bundle also includes ePhD™ Bond Repair Nail Treatment. If you're already a fan of the patented bond repair formula, you can now save when you bundle your refills with this innovation.