Before application, the nails should be clean and dry: moisture prevents the liquid from spreading evenly. The most convenient time to use the drops is after a shower, once the skin has dried, or before bed, so that the product has time to absorb without contact with water.
Apply a few drops directly to the nail plate and spread them lightly over the surface. The liquid texture flows into the unevenness and micro-relief of the nail by itself, so there is no need to rub it in hard. Do not forget the skin around the nail: this area needs just as much attention, especially if the nail looks uneven or has lost its shine.
Regularity matters more than a single intensive application. If you go to a swimming pool or gym or wear tight shoes, it is worth making the drops part of your daily evening routine for as long as you want to keep your nails looking well cared for.
The product is for external use only. If the skin around the nail is irritated or the nail plate has changed noticeably, it is better to consult a specialist before use.