KeraFirm Pro Drops is sold as a topical solution applied with a precision brush to the nail plate, the surrounding cuticle and the skin at the nail edge. The pitch is convenience: one small bottle, one short daily step, no soaking, no capsules, no multi-part regimen.
The formula leans on familiar cosmetic ingredients — a group of essential and carrier oils plus undecylenic acid, aloe and vitamin E. None of that is exotic. What differs between brands in this space is concentration, carrier quality and how consistently a person actually applies the product.
It is worth being blunt about categories. A cosmetic topical can improve how a nail looks and feels. A diagnosed nail infection is a medical matter, and a clinician can confirm whether that is what you are dealing with before you spend months on a grooming routine that was never designed for it.