The correct usage method of scented candles not only enhances the atmosphere at home but also ensures safety and the best usage experience. Here are the detailed steps and precautions: 
I. Preparations Before Use 
Trim the wick 
Before the first use, use a candle wick trimmer to trim the wick to about 5 millimeters (an excessively long wick may cause black smoke, while an overly short wick may result in a too small flame). 
Before each lighting, check the length of the wick and keep it clean. 
Choose the appropriate environment 
Place it on a flat, fireproof and wind-free surface (such as a ceramic tray or glass base). 
Stay away from curtains, pets, children and flammable items. 
II. Steps for Lighting the Candle 
The first combustion is very important. 
The first burning process should last for 2 to 3 hours until the surface of the candle completely melts and forms a uniform pool of wax (to avoid "memory rings" that could cause uneven burning in the subsequent stages). 
Proper ignition method 
Use a long-handled lighter or match to light it. Be careful not to get burned. 
Avoid blowing out with your mouth (as it will produce a smoke smell). It is recommended to use a candle cover or dip the wick in the wax liquid to extinguish it. 

III. Precautions During Use 
Control the duration of combustion 
Each combustion should not exceed 4 hours. Avoid overheating of the wax oil or the container. 
The remaining wax layer should be at least 0.5 centimeters thick to prevent the container from being damaged due to complete burning at the bottom. 
Avoiding interference with combustion 
Don't move the burning candle to prevent the wax liquid from spilling out. 
If the wick is misaligned, it can be gently adjusted using a non-metallic tool (after extinguishing the flame). 
IV. Extinguishing and Preservation 
Safety extinguishing 
Use a candle cap or a metal spoon cover to extinguish it, reducing the smoke. 
After confirming that it has been completely extinguished, re-align the wick to ensure it is properly positioned for the next use. 
Storage method 
After cooling, cover the container and store it in a cool and dry place (avoid direct sunlight to prevent fading or melting). 
If there is dust on the surface of the candle, you can wipe it gently with a soft cloth. 
V. Additional Tips 
Enhance the fragrance effect: Before lighting the candle, place it in a warm environment (such as in the sunlight) to facilitate the diffusion of the fragrance. 
Avoiding the tunnel effect: Ensure that the wax pool is completely melted each time it is burned, and avoid any remaining unburned wax at the edges. 
Multi-functional use: The residual heat after extinguishing can be used to moisturize the hands (only for natural wax without added pigments). 
Safety Warning

❗ Do not leave a burning candle unattended. 
❗ Pregnant women or those with respiratory sensitivities are advised to choose unscented or natural essential oil candles. 
❗ Do not touch or add water for cooling when the container is overheated. 
Proper use of scented candles not only extends their lifespan but also ensures a more lasting and even fragrance. While enjoying your relaxation time, be sure to prioritize safety!