Scent throw
Candle barely scents the room when lit
Weak hot throw is the single most common complaint in candle making. It usually means the flame is not melting enough wax to release fragrance, or the fragrance was destroyed at pour.
Written by Maya Holloway
Likely causes
- Wick is under-sized; melt pool too shallow to vaporise FO.
- Fragrance added above its flash point and partially evaporated.
- Insufficient cure time (soy candles need 7–14 days).
- Fragrance load below the wax's effective minimum (typically 6%).
How to diagnose
- Confirm melt pool reaches the vessel wall within 2 hours.
- Check the temperature at which fragrance was added against the FO flash point.
- Measure cure time: was the candle burned before day 7?
What to change next batch
- 01
Size up the wick one increment.
- 02
Add FO at 80°C maximum, stir for two full minutes, then cool to pour temp.
- 03
Cure for at least 7 days, ideally 14, before evaluating throw.
- 04
Increase fragrance load up to wax's maximum (commonly 8–10%).
Related symptoms
- Candle smells weak in the jar before lighting
Cold throw is muted, no scent at counter.
- Candle tunnels down the centre
Wax left on the wall, narrow burn pool.
- Fragrance fades after a few weeks
Strong at week 1, weak at week 6.
Read deeper
- Fragrance load and IFRA: why your max load varies
IFRA category 12 caps candle fragrance load. Here's what the standard says, and why exceeding wax max backfires.