Do not extinguish the flame until the entire wax surface pool has melted evenly.
This is very important as this will prevent your candle from
tunneling and will prolong the life of your candle.
.
Room temperature/atmosphere variation may affect each candle's burn time. 
.
Once the wick forms a long mushroom like shape, extinguish the candle,
let it cool and gently remove/trim the tip.
.
Keep wax pool free from excess wick and other debris at all times. 
.
Extinguish candle carefully, let it cool completely before touching or moving. 
.

We recommend using a candle snuffer to extinguish a candle.

Never use water as it can cause wax to splatter or glass to break..

Never leave a burning candle unattended.