I love to put moisturizer or nail oil on my nails to make them strong but I learned the hard way not to put it underneath my nails.
It seems to gradually detach the skin from the nail an make the white part of your nail a lot larger (within a week.) And of course the closer to the tip that your nail is attached the stonger it will be. You could soon have bitten off looking nails.
I am not sure of the cause for this but it does happen.