@@MyCandyCrush1Tap the party booster icon in the bottom of the screen. The screen will dim until you use the booster or don't use it. If you use the booster, in the start of it's action a star shaped piñata will appear from the top of the screen and the party poppers will appear destroying one layer of the blockers and clearing all the candies from the board. After that, one piece off all Special Candies that you can create will appear to random places on the game board and activate automatically. Also paper confetti will kite on the screen when the booster action is in process. This is the most powerful booster in the game. If you have read about this, it was my pleasure to help you anyway.