Str8up | 1" Digital Flat Iron
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Get clear, repeatable temperature control with the Cortex Beauty Str8up 1-inch Digital Flat Iron. Its LCD shows your selected setting, while a 30-second warm-up and secure storage lock help keep everyday straightening simple.
Features & Benefits
- LCD displays temperatures from 200°F to 460°F for precise adjustment.
- 1-inch plate width supports controlled, section-by-section styling.
- Rapid 30-second warm-up gets your routine started quickly.
- Anti-scald design helps reduce accidental contact with hot surfaces; plates still become hot.
- Safety lock holds the plates closed for storage.
- Universal voltage supports travel with an appropriate plug adapter when required.
- Automatic shut-off provides a backup safety feature.
Free U.S. shipping on orders over $50 USD after discounts and before tax. Shipping details.
We do not accept returns for a refund. Exchanges are available for damaged or defective units (for example, a tool that stops working) bought from cortexbeauty.com or any authorized retailer and still within our 1 year limited warranty. Start a chat at the bottom of the page with your order number and photos. Approved replacements require a $24.95 shipping, handling and processing fee. Exchange policy.
Need help with your exact model? Start with our Help Center and FAQ, where you will find answers to common product questions and tutorials. You can also use the chat at the bottom of the page.
Eligible tools have a 1 year limited warranty from the date of purchase. Register within 90 days of purchase. Continental U.S. only. Approved replacements require a $24.95 shipping, handling and processing fee and retain the remainder of the original warranty. Warranty terms.
Made for every detail
1
LCD Temperature Display
Shows your setting, from 200°F to 460°F.
2
Rapid Warm-Up
Ready in about 30 seconds.
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Anti-Scald Design
Helps reduce accidental contact with hot surfaces. Plates still get hot.
4
Safety Lock
Holds the plates closed for storage.
See it in action
STRAIGHTENS
Glides smoothly through each section to transform wavy, curly, or coarse hair into a sleek, polished finish.
ADAPTS
Adjustable digital heat and temperature presets give you precise control for styling fine, medium, or thick hair.
SHAPES
The slim 1-inch plates make it easy to create straight styles, soft bends, loose waves, and bouncy curls.
Key features at a glance
How to use
1
Warm Up in 30 Seconds
Plug in and set 200°F to 460°F on the LCD. Lower for fine hair, higher for coarse.
2
Section Dry Hair
Work in small sections of clean, fully dry hair.
3
Glide, Then Lock
Glide slowly root to end. When you're done, lock the plates closed to store.
Cortex Beauty flat iron vs. a basic flat iron
Even heat across the plates
Even heat across the plates
Adjustable heat for your hair type
One or two heat settings
360° swivel cord
360° swivel cord
1 year limited warranty
Limited or no warranty
