A/C and Refrigerant Treatment 1-0z Dose Bottle Cerma treatment is the only product of it's kind! Cerma restores life to your old A/C Compressor and Extends life to your new A/C Compressor! Power savings improved heat transfer Helps reduce internal moisture and acid buildup Quieted down the compressor Revived hard start units to normal running will remove 100% of the moisture in your system and will provide a faster thermal transfer rate will see a 5 to 20 degree drop from your dashboard within 10 minutes of installation.