Remove old nail polish and wash hands. Then take small brush and clean all surface of nails by circular motions. Dry nails with the napkin touching easily.
Then you should mix 1 table-spoon of lemon juice (for nails whitening) and 1 table-spoon of dry quick-dissolving yeast (for nails polishing). Put the mixture on the every nail.
Polish nails’ surface with non-metal nail-file carefully in the direction from one side of nail to another side. It’s better to do about 20 times for every nail. When you feel that nail becomes hot, stop the procedure.
Wash hands again and dry with napkin. Put any oily cream for hands.