Good grooming and elegance comes from nails that look bright white healthy and attractive nails become stained for all sorts of reasons nail polish tanning products and smoking are a few the brilliance treatment regime contains brightening and whitening ingredients as well as moisturisers such as avocado oil to keep them moisturised and healthy brilliance regime is for yellow and stained nails nails are porous and absorb all sorts of things that can leave them dull and stained a