Argan oil is one of the best products that works well to improve nail thickness and strength while protecting against damage. Besides, it's pretty easy to do. Pair it with a healthy diet that replenishes the nutrients the nail needs for healthy growth, and you will get pat-down nail care. 
 How to apply argan oil on the nails: 
 Remove all the varnish with nail polish remover and a cotton ball. ... 
 File your nails. 
 Apply argan oil to your cuticles. ... 
 Massage argan oil into your nails. ... 
 For nails that are particularly dry or brittle, soak them in argan oil for 15 minutes to allow the oil to absorb into your nails.