For stability purposes, we strongly
recommend that only 100% beeswax candles are used when burning candles
with shades and carriers. Candles of lower quality have burn times that
are too rapid, which will cause the shades to tilt while burning.
Tilting can still occur, although at a slower rate, with beeswax
candles. You can correct the tilt periodically by simply straightening
the shades when they list to the side. As with any flame, never leave
burning candles unattended.