fun MLCC fact: the crystalline structure of the dielectric ceramic (usually barium titanate) deforms over time, which modifies the material's dielectric constant, causing a capacitance derating effect that follows a roughly log10 curve vs. time in hours.

this effect is essentially innate and continues regardless of most operating parameters, except heat. if you heat the capacitor to the curie point (~150C will do it) the curve resets to t=0.

you can do this as many times as you like.