Can candles be kept forever?
Candles generally can be kept for an unlimited period as long as they are properly stored. Always place long candles (taper candles, household candles, thin pillar candles etc.) flat when storing! Otherwise the effect of warmth can deform them. High fat-content candles can give rise to the packaging (plastic film, paper, cardboard) becoming discoloured or soft. But this is of no significance at all for the candle itself.