You can layer it as many times as you want to. I general after about 5 coats your at near max. Try spit shining. Get you a empty spray bottle fill it with water (distilled is best) put it in the Frig. to get it cool. Then when you are ready a add another layer spray a fine and I mean fine layer on the section your doing and rub in the #26. Do not use to much water as to put drops on the car. You'll have fun and get some awesome looks...