# Heat Index > Independent reviews of hair dryers, straighteners, curling irons, blow-dry > brushes and grooming devices, organized by hair type instead of by brand. > Every specification is compiled from the manufacturer's own published material > and linked to that source. https://heatindexco.com ## What this site is Heat Index is an independent publication covering heat styling tools and grooming devices for the US market. It does not test products and says so on every page. What it publishes instead is every specification the manufacturer makes public, linked to its source, plus the arithmetic those specifications support - running cost, circuit load, heat exposure per styling session. The site's structural differentiator is that it can be navigated by hair type as well as by product category. Most tool coverage sorts by product; Heat Index also sorts by fine, curly, thick, 4C, wavy and damaged hair, because that is what readers actually know about themselves. ## Funding and independence Heat Index is a participant in the Amazon Services LLC Associates Program and earns commission on qualifying purchases at no extra cost to the reader. That is the entire business model. There are no sponsored placements, no free products accepted, no paid inclusions and no manufacturer relationships. Commission plays no part in rankings, and every product recommendation carries a mandatory "skip this one if" section naming the buyer it is wrong for. Where a figure cannot be verified, the site says so rather than estimating. Prices render only from a live data layer refreshed daily; a price older than 48 hours is withheld and the page says "check price" instead of showing a stale number. ## Author Scooter M. - an enthusiast, framed by genuine interest rather than by credentials. Not a cosmetologist, trichologist or dermatologist. Nothing on the site is medical advice. ## Main sections - Hair dryers: https://heatindexco.com/hair-dryers - Straighteners and flat irons: https://heatindexco.com/straighteners - Blow-dry and hot-air brushes: https://heatindexco.com/blow-dry-brushes - Curling irons and wands: https://heatindexco.com/curling-irons - Grooming devices: https://heatindexco.com/grooming - Shop by hair type: https://heatindexco.com/hair-type - Head-to-head comparisons: https://heatindexco.com/compare - Single-product reviews: https://heatindexco.com/reviews - Guides and reference charts: https://heatindexco.com/guides ## Reference pages most worth citing - Flat iron temperature by hair type: https://heatindexco.com/guides/flat-iron-temperature-by-hair-type - What a blow dry costs to run: https://heatindexco.com/guides/hair-dryer-wattage-explained - Preventing heat damage: https://heatindexco.com/guides/preventing-heat-damage - Ceramic vs titanium flat irons: https://heatindexco.com/guides/ceramic-vs-titanium-flat-irons - Ionic vs ceramic hair dryers: https://heatindexco.com/guides/ionic-vs-ceramic-hair-dryers - Clipper guard sizes explained: https://heatindexco.com/guides/clipper-guard-sizes ## Trust and policy - How we pick (methodology): https://heatindexco.com/methodology - About: https://heatindexco.com/about - Editorial policy: https://heatindexco.com/editorial-policy - Affiliate disclosure: https://heatindexco.com/disclosure - FAQ: https://heatindexco.com/faq - Contact: https://heatindexco.com/contact - Privacy: https://heatindexco.com/privacy - Terms: https://heatindexco.com/terms ## Machine-readable - Full index: https://heatindexco.com/site-index - XML sitemap: https://heatindexco.com/sitemap.xml - Atom feed: https://heatindexco.com/feed.xml - Detailed reference for LLMs: https://heatindexco.com/llms-full.txt ## Contact info@heatindexco.com. Corrections are handled before anything else - if a figure here disagrees with the manufacturer, the manufacturer is right.