This homemade nail strengthener oil is the best I've tried. It nourishes and protects weak brittle or peeling nails making them stronger and more resilient fast.
*I chose to use a 2 ounce despite the recipe only making a little over an ounce. This gives room to shake the oil, and a small amount lasts quite awhile. If gifting you may wish to use a smaller bottle, make sure it has a dropper or dabber though for easy oil application.