Ingredients & Safety
Are Soy Candles Safe? What the Label Does Not Tell You
People usually ask "are soy candles safe" while holding a candle they already own, or standing in a store deciding...
Answers to Your Burning Questions
Read about candle science, sustainability, and burning tips for getting the most from your Sero Candles.
Ingredients & Safety
Phthalate-Free Candles, and the One Phthalate That Was Ever in Them
The phrase "phthalate free candles" now shows up on nearly every candle listing that mentions ingredients at all. That is...
Ingredients & Safety
Clean Burning Candles: What That Actually Means
Walk into a candle aisle and "clean burning" is on half the labels. Search the phrase and you'll find dozens...
Ingredients & Safety
What to Look For in a Non-Toxic Candle: A Manufacturer's Checklist
“Non-toxic” is a popular word in the candle aisle. It has no legal definition. No federal agency certifies a candle...
Ingredients & Safety
Essential Oils vs. Fragrance Oils: Which Makes a Better Candle?
Essential oil candles sound like the natural choice. But candles aren't diffusers - they're combustion systems. Here's why that changes...
Ingredients & Safety
The Soy vs. Paraffin Debate Is Missing the Point
Soy or paraffin - which candle wax is safer? A candle manufacturer breaks down the science, the marketing myths, and...
Sustainability
Are Your Candle Jars Actually Recyclable?
Most candle jars can't be recycled curbside. The glass type and wax residue both cause problems. Here's the material science,...
Sustainability
Sustainable Candles: The Complete Guide to Eco-Friendly Candle Choices
Learn what actually makes a candle sustainable - from wax sourcing and wicks to containers and packaging. A complete lifecycle...
Sustainability
Refillable Candles: How They Work and Why They Matter
Refillable candles pair a permanent vessel with replaceable wax, reducing waste without sacrificing burn quality. Compare pour-your-own, pop-out, drop-in, and...
Lifestyle
Three Days in Baltimore: Inside Our Brand Photoshoot
How Sero's brand photos got made: three days in a Baltimore studio with Limonata Creative and photographer Emily Marie Schultz.
Lifestyle
How to Burn a Candle Properly (And Why the First Burn Matters Most)
Most candle advice arrives as a list of rules with no reasons attached. Trim to a quarter inch, never burn...
Lifestyle
The Candle Gift Guide: 10 Refillable Sets Where the Container Outlives the Wax
Somebody on your list is getting a candle this year. It is the safest gift there is, which is exactly...
Lifestyle
Why Cilantro Tastes Like Soap (And What It Means for How You Smell Candles)
Tell a room full of people that cilantro tastes like soap and you will start an argument. Half of them...
Lifestyle
Aromatherapy and Candles: What the Science Actually Says
"Aromatherapy candles" are an interesting category to dig into. Some of what gets claimed about them holds up under research....
Lifestyle
Why You Can't Smell Your Candle Anymore: The Science of Nose Blindness
You lit a candle thirty minutes ago. Now it smells like nothing. A friend walks in and comments on the...