Why do candles turn yellow over time? It is one of the most common candle care questions — and the answer is simpler than most people expect. Candle wax yellowing is a natural process, not a sign of poor quality. Understanding why it happens helps you store and care for your candles properly and keep them looking as beautiful as the day they arrived.
Three Reasons Candle Wax Turns Yellow
1. Oxidation
When candles are exposed to air, a process called oxidation occurs — a natural reaction between the wax and the oxygen in the air. Over time, this process gradually affects the appearance of the wax and can produce a yellowish tone. It is the same process that causes many organic materials to change color with age, and it is entirely harmless to the candle’s performance.
2. Sunlight and UV Exposure
Sunlight — particularly its ultraviolet (UV) component — is one of the most common causes of candle yellowing. UV light breaks some of the molecular bonds in the wax, creating new compounds that carry a yellowish tint. This is why candles displayed near windows or in direct sunlight yellow significantly faster than those stored in darker environments.
3. Wax Impurities and Additives
Sometimes the wax itself contains impurities or additives that contribute to color change over time. Beeswax, for example, is naturally yellow — and when blended with other wax types, it can influence the final color of the candle. Certain dyes and fragrance components can also contribute to yellowing as they interact with the wax over time.
How to Prevent Candle Yellowing
Store in a cool, dark place. Keeping your candles away from direct sunlight and heat sources is the single most effective way to slow yellowing. Store them in a cabinet, drawer, or box — away from windows and light — to minimize exposure to both UV light and air. Proper candle storage preserves both the appearance and the fragrance quality of your candles.
Choose high-quality candles. Candles made from carefully selected, premium wax blends with quality fragrance formulations are more resistant to discoloration over time. The quality of the raw materials and the care taken in formulation make a meaningful difference in how well a candle holds its appearance.
Yellowing is a natural process — not a defect. With proper storage and care, your Thompson Ferrier candles will maintain their appearance and fragrance quality for significantly longer.
Explore the Thompson Ferrier collection → — and store every candle the way it deserves.
Quick Answers: Why Candles Turn Yellow
Is it normal for candle wax to turn yellow?
Yes. Candle wax yellowing is a completely natural process caused by oxidation, UV exposure, and certain wax additives. It does not affect the safety, fragrance quality, or burn performance of the candle. It is a cosmetic change, not a sign of damage or defect.
What causes candles to yellow fastest?
Direct sunlight is the fastest cause of candle yellowing. UV light breaks molecular bonds in the wax and accelerates discoloration significantly. Candles stored near windows or in brightly lit areas will yellow much faster than those kept in cool, dark storage.
How do I keep my candles from turning yellow?
Store your candles in a cool, dark place — away from direct sunlight, heat sources, and areas with significant temperature fluctuation. A cabinet, drawer, or box is ideal. Minimizing air and UV exposure slows the oxidation process and keeps the wax looking fresh longer.
Does candle yellowing affect performance?
No. Yellowing is a surface and cosmetic change to the wax. It does not affect how the candle burns, how the fragrance performs, or the safety of the candle. A yellowed Thompson Ferrier candle will burn and fragrance exactly as intended.
For more on candle care and storage, read how to properly store your candles, candle care tips, and what are the sweat beads on the surface of my candles.
Image with text
Pair text with an image to give customers insight into your brand. Tell a story, explain a product detail, or describe a new promotion.