If i use a nail whitening pencil to make a french manicure...?

do i color in my real tips on top of my nails, or on the inside?If i use a nail whitening pencil to make a french manicure...?
i color underneath the nail, and seal it in with a clear polish. Or just carry the pencil with me for touch ups during the day.If i use a nail whitening pencil to make a french manicure...?
The inside. And use an emery board under your nails to rough up the surface so the pencil sticks better.
top they used to do the inside but that causes infection !!
real tip

skin problems