The ISO Beauty Spectrum Pro hair straightener has generated considerable buzz, and this review dives deep into whether it lives up to the hype. We unpack the unboxing experience, scrutinize its design features, and detail its performance on various hair types. From the stylish purple aesthetic to the innovative floating plates, we leave no detail unexamined. This in-depth assessment will help you decide if the Spectrum Pro is the right investment for your hair care routine, considering both its strengths and limitations.This review covers everything from the initial impression of the packaging and design, to the functionality of its temperature settings and the overall straightening experience. We'll discuss the pros and cons, including the unique features like far-infrared technology and negative ions, and evaluate their impact on hair health and styling results. Ultimately, we aim to provide a balanced perspective, helping you determine if the ISO Beauty Spectrum Pro is worth adding to your beauty arsenal.
Pros And Cons
- High-quality packaging
- Swivel cord
- Hook for hanging
- 100% solid ceramic plates
- Floating plates (hair doesn't get caught)
- LED indicator
- Leaves hair shiny
- Far infrared technology
- Negative ions (for shine)
- Friz control
- Humidity safe plates
- Needs slow passes for effective straightening
- Initial burning plastic smell
- Doesn't heat up as much as expected (450°F claim questioned)
- May not be ideal for achieving perfectly pin-straight hair (more voluminous look)
Read more: Top 5 L'ANGE Hair Straighteners: Reviews & Buying Guide
Unboxing and First Impressions
The ISO Beauty Spectrum Pro hair straightener arrived in a surprisingly cute and high-quality box. The straightener itself was nestled in a velvet-like compartment, adding a premium touch to the unboxing experience. This attention to detail in the packaging is a nice plus, suggesting the brand cares about presentation.
Upon opening, the vibrant purple color of the straightener immediately caught my eye. The unique patterned design is stylish and contemporary, a refreshing change from more mundane designs. Overall, the initial impression was very positive—both aesthetically pleasing and well-packaged.
Features and Design
The straightener features a temperature dial with settings ranging from 170°F to 450°F, providing ample control for various hair types. A convenient on/off switch and a 360° swivel cord are also included, enhancing usability. Small, but appreciated features such as a hanging loop for storage were also incorporated into the design.
The 1 ¼ inch floating plates are a standout feature. Unlike some straighteners where plates are excessively wiggly, this one provides a smooth glide, preventing hair snagging. This is crucial for preventing damage and frustration during straightening.
Performance and Usage
During use, I found it necessary to move the straightener slowly through my hair to achieve optimal results. While my hair is fine, it's abundant, so it requires careful and slower passes compared to quicker straightening methods. The straightener doesn't snag my hair, which is a huge plus.

Surprisingly, the heat felt less intense than other straighteners I've used at the same temperature settings. While it still effectively straightens my hair, this may be due to the protective features advertised such as far-infrared technology and negative ions.
Pros and Cons
Pros: High-quality build, stylish design, smooth floating plates that prevent snagging, leaves hair shiny and straight for days, far-infrared technology, negative ion generation, temperature control, swivel cord.
Cons: Requires slower passes for best results, initial burning plastic smell (common to many straighteners), heat doesn't feel as intense as other high-temperature straighteners; may not be ideal for achieving extremely pin-straight hair for users who want that level of sleekness.
Overall Verdict
The ISO Beauty Spectrum Pro hair straightener delivers on its promise of sleek, shiny hair. The quality of the build and the smooth glide of the plates are noteworthy. The added benefits of far-infrared technology and negative ions contribute to its performance.

However, the need for slower passes and the less intense heat compared to other high-temperature straighteners might be drawbacks for some users. For those seeking a high-quality straightener for straight to wavy hair that prioritizes shine and minimizes damage, this is a solid option. I'd rate it 3.9 out of 5 stars.