How to harden finger & toe nails (if it's possible)?

btw i'm a man so if i have to go buy some nail care crap like a f-a-g then i'll pass


but if i could do something that's already at home or take certain vitamin %26amp; mineral supplements??How to harden finger %26amp; toe nails (if it's possible)?
if you get more calcium that can help, so drink milk and eat a few tums each day.How to harden finger %26amp; toe nails (if it's possible)?
yeah drink milk and stuff like that


or buy opi nail envy in matte so it doesnt look like youve got nail varnish on cause you no, its matte
More calcium would help.