Newsen Nail Nourishing Serum

Because I sanitize my hands frequently and use stick-on nail stickers often due to the kids, my nails tend to split easily, hangnails appear frequently, and most importantly, they have noticeably thinned out. I was worried about this when a friend recommended Newsen, and while it hasn't shown a dramatic improvement, seeing that my nails split less than before, it seems like it is working.