Plug it in. Set your temperature based on your hair type. Fine hair? Go low—around 300°F. Thick or coarse hair? Crank it to 380°F or even 400°F.
Wait for it to beep or blink. Do not rush this part. Burnt hair smells like a damp campfire that went wrong.
While it heats, spray on a heat protectant. Seriously. It’s like sunscreen for your strands. Your future self will thank you when your hair isn’t brittle.