To maintain the softness and smoothness of my hands and feet I, whenever possible, let my nails soak in warm extra-virgin olive oil in a plastic container for 15 minutes. This prevents flaking and cracking.
When I'm not working I try not to use nail polish, enabling my nails to
breathe. If my feet are dry I will mix sugar and honey and dump it
around my feet then I will put socks and sleep with it - my feet feel
amazing the next day. Now a good trick if your nails are weak is to put 3
cloves inside your base coat nail polish, it works wonders. To help set
the nail polish, apply white vinegar to the nail before the polish.
Also, if you don't have much time to wait for your nails to dry
properly, put them under cold running water after application - it will
also prevent the emergence of air balls. Another great tip for long and
strong nails is to soak the fingertips in a mixture of warm water and sodium bicarbonate for 10 minutes, once a week.