If yellowing occurs, it can be caused by constant polish use. Take a break and use a brightening nail treatment [1].
Use a fine-grit buffer to gently smooth out vertical ridges. Do not over-buff, as this thins the nail [2]. perfect matures thumbs
Apply a thick hand cream, especially one containing shea butter, glycerin, or hyaluronic acid, several times a day, focusing on the thumb area [1]. If yellowing occurs, it can be caused by constant polish use
Use a nail strengthener or hardener to protect brittle, thin nails [3]. If yellowing occurs