The principle of passive nail correction is based on the observation that heavily curved, involuted nails often exhibit a lesser degree of curvature at the proximal nail margin (i.e. in the area of the nail matrix and cuticle) than at the distal end of the nail plate (= free nail edge).

With passive nail correction, this lower degree of curvature of the nail plate is preserved as the nail grows forward, thereby achieving an overall flatter shape of the nail plate over time.

For this purpose, the UNGUISAN HARD COMPOSITE GEL is applied to the nail plate in strips and perpendicular to the direction of growth, and then cured.

The extremely hard composite strip acts like a "supportive corset" and grows forward with the nail. Meanwhile, the nail plate retains its curvature. All of this happens completely painlessly, tension-free, and gently. The procedure is therefore also suitable for cases where classic nail correction should not be performed (brittle nails, onycholysis, high-risk patients, etc.).

The method is also ideally suited to secure the correction results of a nail brace treatment and to sustainably preserve the improved nail shape.