Am self doing manicure.

Am not trusting for spa,that spas are getting easy infection, and am checked and my friends that they are not disinfecting instruments.
As today is popular as not cutting manicure as you can buy special instruments for his, as if if regular use oil for cuticle softening and special file, and true that can avoid clippers , and to polish nails just for one time-month ,as in polishing are removing dead  cells and top care layer.And therefore nails having a porous structure,thus give for theirs a breath, as without varnish, and needing are massage and masks as try this procedure to warm 1/2 glass of vegetable oil,add 1/2 tea.sp. of sea salt, juice of half lemon, massage nails with a soft brush with this mass,and keep nails in oil, after this nails looking care, healthy and skin around theirs is smooth and without burrs.