
Our pick
Remington Shine Therapy 1-inch Argan Oil & Keratin Flat Iron (S9511)
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Buyer question · Heat settings
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Our pick
Price and delivery are shown on Amazon.
Short answer
Remington's use and care manual for the Shine Therapy 1-inch flat iron (S9511) matches temperature to hair type: 300–340°F for thin/fine or easy-to-style hair, 360–370°F for color-treated, 390–410°F for textured, and 430–450°F for thick and difficult-to-style hair. Settings run from 300°F to 450°F, and holding the minus button for about 2 seconds locks the keys.
Remington's S9511 use and care manual says to select the appropriate temperature for your hair type, and gives a chart: 300–340°F for thin/fine or easy-to-style hair, 360–370°F for color-treated, 390–410°F for textured, and 430–450°F for thick and difficult-to-style hair.
Remington lists a 300–450°F range, and the manual names each setting: 300, 320, 340, 360, 370, 390, 410, 430 and 450°F, so each chart band has its own settings.
The manual says pressing and holding the minus button for about 2 seconds locks all the keys, and the display shows a lock symbol. Holding the plus button for about 2 seconds jumps to the maximum 450°F setting.
Remington lists a heat-up time of 15 seconds.

Steps follow Remington's use and care manual for models S9511 and S9531.
Hair-type chart and controls are from Remington's use and care manual; specs are from Remington's product page.
From the maker
KEEP AWAY FROM WATER.
This appliance is hot when in use. Do not let eyes or bare skin touch heated surfaces.
Never use while sleeping.
Do not hold the styler in one area for a long period of time or damage to hair may occur.
Remington's manual lists 300–340°F for thin/fine or easy-to-style hair.
The manual lists 360–370°F for color-treated hair.
The manual lists 430–450°F for thick and difficult-to-style hair, and 390–410°F for textured hair.
Remington says to press and hold the plus button for about 2 seconds to go to the maximum 450°F setting.
Remington's manual says hair should be dry and free of tangles before using the styling iron.
Remington says to make sure the unit is unplugged and cool, then use a damp cloth to clean the plates and the outside of the handle; no other maintenance is required.
Use Remington's own chart: the lower settings for thin/fine hair, 360–370°F for color-treated, 390–410°F for textured and the top settings for thick hair. With nine set points and a temperature lock, the S9511 lets you stay on the band Remington lists for your hair type.
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Photos: Remington (remingtonproducts.com).
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