Consider taking calcium and magnesium supplements. You don't need a chemist to tell you why your nails are so discolored. Beauty Chop Nail Whitening Guide STEP 1 Remove old polish thoroughly. Wash hands with soap and water. Use a nail brush to gently scrub over and under nails.
Pat hands dry with a soft towel.
STEP 2 Make a paste of one tablespoon lemon juice and one tablespoon baking powder. Apply a small dot of paste in the center of each nail. STEP 3 Gently buff the tops of your nails with a nail buffer. STEP 4 Wash hands again and pat dry. Massage in a rich hand cream.