Beau Lines Toes
They may look like indentations or ridges in the nail plate.
Beau lines toes. This condition of the nail was named by a french physician joseph honore simon beau 18061865 who first described it in 1846. Beaus lines are deep grooved lines that run from side to side on the fingernail or the toenail. They usually develop when nail plate growth which begins in the nail matrix located under the cuticle is temporarily disrupted.
Its not too big of a concern if you have this issue although your cosmetic concerns are quite justifiable. You may be referring to beaus lines which are grooves that run horizontally across the nail plate.