Crackle formula was designed to work much etter on the tips using Accrylic or Gel System, IT WON'T CRACK the same on Natural nail. A) If you would like to have the entire nail with the crackle appearance: 1) Prep your nails. 2) Glue your tip and cut it. 3) Do your acrylic or gel system process, file and clean your nails. 4) This step is very important in order for the crackle to work properly:select the color of nail polish, apply a coat and let it dry. 5) Apply Mia Secret Crackle over the entire nail commencing from the cuticle and wait for 2 minutes until it cracks. 6) To have a shiny and radiant result, apply Mia Secret UV FINISH GEL. B) if you would like to have only the tip or French with the crackle appearance: 1) Prep your nails. 2) Glue your tip and cut it. 3) Apply a layer of nail polish color of your choice to the tip only and let it dry. 4) Apply Mia Secret Crackle to the tip of the nail and wait for 2 minutes until it cracks. 5) At this point you can start with your Acrylic or gel system to the entire nail. 6)To have shiny and radiant result. apply Mia Secret UV FINISH GEL. Use your imagination to choose the crackle affect!!!!