Let's get straight to it — here's what actually matters on this one.

• Cotton and linen tolerate high heat well; synthetics like polyester can melt, glaze, or warp under the same setting.
• Most irons have fabric-specific settings for a reason — using the wrong one is a common cause of shine marks or fiber damage.
• Ironing on the wrong side of the fabric, or with a pressing cloth, protects delicate weaves and prevents surface shine.
• Consistently over-hot ironing weakens fiber structure over time, making fabric feel thinner and less durable after repeated sessions.

The fit-and-fabric-health takeaway: The right ironing temperature isn't just about looking crisp — it directly protects the fabric's surface texture and lifespan.

Next up: check out our guide on how to store blazers so they keep their shape.