• Action: Let the candle burn until the wax melts completely to the edges of the concrete vessel.
• Time: This usually takes 3-4 hours.
• Why: Soy wax has "memory." If you don't melt to the edge, the candle will tunnel (burn down the center), wasting wax and stressing the concrete vessel with concentrated heat.

• Action: Trim the wick to roughly 1/4 inch (about 5-6mm) before lighting.
• Why: This prevents a large, smoky flame that creates soot and deposits it on the porous concrete surface. It also keeps the flame steady and safe

• Action: Do not burn the candle for more than 4 hours at a time.
• Why: Concrete retains heat. If it overheats, the vessel can develop micro-cracks or become too hot to handle.
• Cooldown: Allow the concrete vessel to cool completely to room temperature before moving it or relighting it.

• Action: Always place the concrete vessel on a stable, heat-resistant surface, coaster, or tray.
• Why: While concrete is sturdy, it can scratch delicate surfaces. Additionally, if the concrete is not properly sealed, oils from the wax could potentially seep through over time.

• Action: Never soak the concrete vessel in water or put it in the dishwasher. Concrete is porous and absorbs moisture, which can cause discoloration and weaken the structure.
• How to Clean: Wipe the outside with a dry or slightly damp cloth.
• Remove Soot: Use a soft eraser or a dry microfiber cloth to remove soot marks from the inner rim.

• Action: Stop using the candle when there is about 1/2 inch (or 1/4 inch) of wax left at the bottom.
• Why: Burning to the very bottom can lead to excessive heat, causing the vessel to crack.

The vessel can be reused for small plants, as a pencil holder, toothbrush holder and many other ways.

Place your concrete jar in the freezer for at least 3–5 hours, though overnight is ideal for the best results.

Use a spoon or butter knife to gently poke at the center or edges of the wax. The frozen wax should crack and lift away from the container easily.

Pry the metal wick tab off the bottom with your spoon.

Dip a paper towel in rubbing alcohol to wipe away any remaining oily film.

Boiling Water: Avoid using the "boiling water" method for concrete jars; while popular for glass, the water can soak into the porous concrete and cause it to crack or retain moisture for long periods.

After the holder has cooled completely, tap out the loose ash. Use a soft brush or dry cloth to remove daily accumulation.

If resin builds up, gently scrub the surface with a soft toothbrush dipped in warm, soapy water. Avoid harsh chemical cleaners, which can leave residues.

For stuck-on oil, apply a paste of baking soda and water, let it sit for 10-15 minutes, and gently scrub. 

Ensure the holder is completely dry before reuse to prevent damage.

• Avoid harsh chemicals: Avoid using harsh chemicals like bleach or abrasive cleaners on cement, as they can damage the surface.
• Test in an inconspicuous area: If you're using any new cleaning methods, test them in a small, inconspicuous area of the holder first to ensure they don't cause any discoloration or damage.