how do i clean the ghd platinum sensor strip? the one between the plates that says 'ultrazone'

Diagnosis

The ghd Platinum Plus Professional Styler utilizes a sophisticated "UltraZone" technology, which relies on a series of high-precision thermal sensors embedded in the black strip between the heating plates. These sensors monitor the temperature of the hair strand in real-time, adjusting the heat output dynamically to prevent overheating and damage. Over time, a layer of "product crust"—a mixture of polymerized hairspray, silicones from serums, and natural scalp oils—accumulates on this glossy surface. This buildup acts as an insulating barrier, preventing the sensors from accurately reading the heat of the hair. When the sensor strip is coated in residue, the styler may struggle to maintain a consistent temperature, leading to "hot spots" or, conversely, a failure to reach the necessary heat for a clean curl or sleek finish. You can confirm this is the issue if you notice the plates feeling unevenly hot or if you see a visible, sticky, or cloudy film over the black UltraZone strip.

How to Fix It

To restore the sensor's accuracy, you must perform a precision chemical cleaning without saturating the internal electronics. Follow these exact steps:

1. Power down the styler and unplug it from the wall outlet. Allow the device to cool for at least 30 minutes; cleaning a hot plate can cause the cleaning agent to evaporate too quickly and leave streaks.
2. Saturate a high-quality cotton swab (Q-tip) with 70% to 90% Isopropyl Alcohol. Do not pour the alcohol directly onto the styler, as liquid can seep into the housing and short the circuit board.
3. Gently glide the swab along the glossy black UltraZone strip, moving from one end to the other in a single direction. Do not scrub vigorously, as the sensor surface is delicate and can be scratched, which would permanently impair the heat-reading capability.
4. Using a fresh, dry cotton swab, immediately wipe away any remaining residue to ensure no alcohol film is left behind.
5. Open the plates fully and use a microfiber cloth to wipe the surrounding ceramic plates, ensuring no residue from the sensor strip has migrated onto the heating surface.
6. Allow the unit to air dry for 5 minutes before plugging it back in.

If That Didn't Work

• Deep Clean with a Soft Toothbrush: If the buildup is thick or "crusty," dip a soft-bristled toothbrush into isopropyl alcohol. Gently brush the sensor strip using very light pressure in short, flicking motions to break up the hardened product, then wipe clean with a cotton swab.
• White Vinegar Solution: For stubborn mineral deposits or heavy silicone buildup that alcohol cannot dissolve, mix a solution of 50% distilled water and 50% white distilled vinegar. Dampen a swab (ensure it is not dripping) and wipe the strip. Follow this immediately with a water-dampened swab to neutralize the acidity.
• Plate Alignment Check: If the styler still performs inconsistently, check if the plates are closing flush. If the plates are slightly warped or obstructed by a large chunk of burnt product at the hinge, the sensor strip cannot make proper contact with the hair, regardless of how clean it is. Use a toothpick to carefully pick out any debris from the hinge area.
• Professional Calibration: If the UltraZone strip is physically scratched or pitted, the sensors may be permanently damaged. In this case, the unit requires a professional internal diagnostic to determine if the heating element or the sensor array needs replacement.

Heads Up

• Avoid Abrasives: Never use nail polish remover (acetone), scouring pads, or toothpaste on the sensor strip. These will strip the glossy finish and destroy the sensor's ability to read temperature.
• Preventative Maintenance: To avoid frequent deep cleans, always apply heat protectants and serums to the ends of the hair and allow them to dry slightly before using the styler; applying product immediately before styling increases the "stickiness" on the sensors.
• Storage Warning: Store the styler in a dust-free environment. Dust accumulation on the UltraZone strip can mix with hair oils to create a grime layer that mimics product buildup.
• Frequency: Depending on your product usage, the sensor strip should be wiped down with a dry microfiber cloth every two weeks and a deep alcohol clean once every two months.