Which type of product is used to fill in ridges on the nail surface?

The product used to fill in ridges on the nail surface is specifically designed to even out the nail texture and create a smooth base for further nail enhancements or polish application. Ridge fillers contain ingredients that help to level off imperfections and create a more uniform surface, making them particularly effective in addressing the visual and tactile aspects of ridged nails.

Using a nail filler or ridge filler can enhance the appearance of the nails by providing a foundation that smooths out any irregularities. This is especially beneficial for individuals who may have nails that have developed ridges due to aging, damage, or other factors. The formulation of ridge fillers typically includes polymers or other ingredients that help achieve this smooth finish without adding unnecessary weight or bulk to the nail.

The other options serve different purposes: nail strengtheners are aimed at fortifying the nail structure; nail polish provides color and aesthetics but does not fill in ridges; and top coats are used to seal and protect the polish but do not address the texture of the nail itself. Therefore, a nail filler or ridge filler is specifically tailored for the task of addressing ridges and ensuring a smoother nail surface.