Nail/Keratin Conditioning

I have another one of my oddball questions.  Is there any merit to conditioning nails?  I have these fancy eyeglasses made from water buffalo horn.  The maker suggests I condition them with coconut oil because hair is made from keratin and so is the horn and coconut oil can penetrate and condition hair so it will work on the glasses as well.  This led be to wonder if there are nail conditioners out there.  There are, so I ask can you actually condition nails?  Is there some truth behind coconut oil possibly being a conditioner for buffalo horn made from keratin?