Let's talk about the Aging of both Ceramic Capacitor and Electrolytic Capacitor. The Ceramic capacitors change most near the beginning of life, but the electrolytic capacitors change most near the end of life.

Aging of Ceramic Capacitor

For ceramic capacitors, the change in capacitance over time, called aging, is due to physical changes over time of the dielectric material used in their construction. The critical factors in this type of aging are

1. The type of dielectric material used in their construction (with many types this effect is negligible),
2. The temperature of the storage and operation environment, and
3. (to a small extent) the voltage of operation.

Ceramic capacitor aging can be reversed by heating the capacitor over the Curie Point. The rate of change slows over time; the concern is primarily the intitial stablization, not long-term lifetime

Aging of Electrolytic Capacitor

Electrolytic capacitors' capacitance can decrease as the capacitor approaches end of life due to electrolyte evaporation.