content: I recently blacked out my grill/tailgate badges and hubcap centers after reading about doing so on several on-line forums. What I learned was that everyone that did not use an adhesion promoter had chipping, flaking or bubbling shortly thereafter. So, if you are going to the trouble of cleaning, scrubbing and sanding/scuffing your items, why not make sure your paint will securely adhere to the surface? It's inexpensive and this can will last for many applications. You don't need much to give you peace of mind that you won't be sanding your project multiple times.I used 2-3 coats per item. You can apply additional coats after 2-3 minutes and then apply your paint within 10 minutes of final promoter coat. Since I am writing this review in winter, please make sure to use in a ventilated area as the fumes are strong.