OPI Repair Mode Bond Building Nail Serum Keratin Protein Nail Strengthening Treatment For Stronger Nails Nail Growth See more Bond Building Nail Serum Nail Envy Strengthener Nail Envy - Big Apple Red What is Ulti-Plex Technology? Ulti-Plex Technology is Patented, breakthrough technology that allows Repair Mode serum to penetrate the nails, interact with nail keratin, and create new bonds. How does Repair Mode repair broken keratin bonds? Repair Mode repairs from inside via biomimicry of nail?s natural keratin. This serum contains Patented Ulti-Plex Technology that penetrates from within the nail recreating protein bonds in the nail. I do my nails at home and like to keep my nails coated.Can I use Repair Mode under my OPI Lacquer shades or treatments? Yes, you can use Repair Mode as a Prep Booster with your OPI Lacquer shades or Nail Envy. Apply 2 coats of Repair Mode to clean, bare nails, and prep those nails prior to lacquer application. I like to go to the salon and have my nails done, can my nail pro use Repair Mode under my OPI salon services? Yes, your nail pro can use Repair Mode as a Prep Booster under your OPI salon services. Can I use Repair Mode while I have an OPI product on? Repair Mode can be used on visible new nail growth while you are wearing your favorite OPI products.