Directions aren't readable (white writing against background of white product). [SEP] Although you can't read directions on bottle and there isn't a separate direction insert, but I was able to return to Amazon and read them.  The ridge filler, doesn't actually fill ridges and might (due to shiny appearance) make them even more noticeable. I can't yet speak to the product's effectiveness in conditioning, repairing, protecting and/or nourishing nails; however, if I notice any improvement in nail ridges or condition of nails after a more prolonged period, I will amend my review to notate.