Dry and Brittle Nails have many causes, everything from nutrition, hydration to actual nail care. Though it is a very expressive area, frequent use of harsh chemicals, polishes, and removers takes the toll of nail health. 

Ensure that intake of vitamins B12 and D3 is adequate; this will support healthy development of your nails. Using a moisturizer with the base of jojoba or almond oil will help fight dryness. Wearing gloves while doing household chores protects them from further damage. 

You can take a break from 'nail art' and let your nails breathe. If you do care for them properly, feeding them well, there is no reason you cannot have healthy nails with nice nail art.