A Guide to Blending Fragrance Oils for Candles

Blending fragrance oils for candles is a combination of art and science, allowing you to create unique, custom scents by layering aromatic "notes." Successful blending starts with understanding the fragrance pyramid: Top Notes are the initial, light scents (like citrus) that you smell first and evaporate quickly; Middle Notes (the heart, often floral or herbal) form the main body of the scent; and Base Notes (like vanilla or woodsy musk) are heavy, grounding, and linger the longest, giving the candle its depth and staying power.

To begin blending, use scent blotter strips to test combinations in small drop-based ratios before mixing large batches into the wax. A common starting ratio for complex scents is the 30/50/20 rule (30% Top, 50% Middle, 20% Base), which provides a balanced fragrance that evolves as the candle burns. Always keep a detailed journal of your oil combinations and ratios, and ensure your final blend adheres to the maximum fragrance load (typically 6-10% of the wax weight) as specified by your wax type, and is compliant with IFRA safety guidelines for candle use