US
OPI

OPI Repair Mode Bond Building Nail Serum

  • Ulti-Plex Technology builds bonds inside the nail
  • 99% nail keratin repair when used as directed
  • 4x stronger nails in 6 days when used as directed
  • 94% protection from damage
  • Vegan, cap made with PCR

Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A bond-building serum for weak, damaged natural nails that need strength and fewer breaks. The listing does not say how often to apply it, so check the directions on the bottle.

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ASIN: B0BXFM8CWFCategory: Nail Strengtheners

Overview

A patented bond-building technology is the core of OPI Repair Mode, a serum that penetrates the nail surface to rebuild keratin bonds inside the natural nail. It also aims to shield nails from damage caused by hand washing and cleaning products.

Repair from inside the nail, rather than a hard coating on top, is what sets it apart from a base coat. The strength claims all depend on use as directed, and the directions are not in the listing.

Who it's for

Nails worn down by frequent hand washing, cleaning products or past manicures are the target. People with healthy nails who only want shine or color do not need a repair serum.

Pros and cons

Pros
  • Builds bonds inside the nail
  • Fast strength claims
  • Protects against everyday damage
  • Cap uses recycled plastic
Cons
  • Directions not listed
  • Claims depend on use as directed

Performance notes

The serum penetrates the nail surface and forms new bonds within the keratin structure, which is why strength builds with continued use. Ridges and color look better over time as the nail grows out repaired.

Specifications

BrandOPI
Dimensions & fit
Size0.3 fl oz
Item Weight0.04 pounds
Capacity & performance
Liquid Volume0.3 fl oz
Other details
SpecialtyProtein, Repair
Item FormLiquid
Number Of Items1
Item Type NameNail Treatment

Frequently asked questions

How much serum is in OPI Repair Mode?

The bottle holds 0.3 fluid ounces.

How does OPI Repair Mode work?

Patented Ulti-Plex Technology penetrates the surface to build new bonds inside the natural nail.

Is OPI Repair Mode vegan?

Yes. It has no animal derived ingredients or by-products.

Is OPI Repair Mode a nail polish?

No. It is a nail treatment serum for repair and strength.