Most straightening brush roundups treat hair as one type: straight-ish, a little frizzy, done. That’s not curly hair. If your texture ranges from loose waves to coils, you need a brush with real heat range and honest expectations, not just a good-looking bristle bed. A few brands have caught on. Drybar’s Brush Crush now gets written up specifically for natural curls, and InStyler built a “Max” version of its Straight Up brush just for thick, curly, and wavy hair. This list is built around brushes that were actually designed with texture in mind, not straight-hair tools that happen to also work on waves.
One honest note before the picks: a straightening brush smooths and relaxes curl pattern. It doesn’t fully straighten it the way a flat iron does. If your goal is bone-straight hair on tight 3C-4C coils, a flat iron built for thick, curly hair will get you there faster and with fewer passes. If your goal is smoother, frizz-free curls and waves with less effort than a flat iron, keep reading.
Quick Picks
Best OverallInStyler Straight Up Max Ceramic Straightening Brush$49.99as of Oct 11, 2026Read our take ↓
Worth the UpgradeDrybar The Brush Crush Heated Straightening Brush$149.00as of Oct 11, 2026Read our take ↓
Budget PickINFINITIPRO by Conair Tension Control Straightening Brush$23.04-$31.49as of Oct 11, 2026Read our take ↓How We Evaluate
We compared current Amazon listings, brand spec sheets, and published reviews for heat range, bristle spacing, ionic technology, and safety features like auto-off and anti-scald bristle tips. Prices are checked against the live Amazon listing at publication and shown as the current price, not an estimate. We only link Amazon or the official brand storefront.
What Actually Matters for Curly Hair
Heat range, not just heat. Looser waves and 2A-2C curls can get smooth results at 350°F to 400°F. Coarser, denser curls usually need a brush that goes higher, like the Drybar Brush Crush’s 450°F ceiling. A brush that maxes out at 350°F on coarse curly hair just means more passes and more total heat contact — the opposite of what you want.
Bristle spacing and bed size. Wider-set bristles and bigger bristle beds, like Revlon’s SmoothStay XL paddle, move through thick curly sections faster. Narrower brushes are more precise around the hairline and shorter layers but slower on volume.
Ionic technology. Ionic brushes are common on this list because curly hair tends to be more frizz-prone and more porous. The technology is designed to help seal the hair cuticle as you style, which cuts static and frizz better than a plain heated bristle bed.
Realistic curl-pattern expectations. Anything from InStyler’s Straight Up Max, which is built for curly and thick hair, to ghd’s Glide, which is built for lower, consistent heat, will behave differently on the same head of hair. If you’re not sure where your curl pattern falls, patch-test on one small section first before committing to a full head.
Safety features. Auto-off, anti-scald bristle tips, and (on adjustable models) a real low-heat setting all matter more on curly hair, since it often needs more passes and more total time under heat than straight hair does.
Always use a heat protectant. Every brush here is a dry-hair tool. Apply heat protectant spray first, and start at the lowest setting that gets results — you can always go up.
Detailed Reviews
InStyler Straight Up Max Ceramic Straightening Brush
The InStyler Straight Up Max is the one brush on this list actually built and marketed for curly hair from the ground up, not adapted from a straight-hair design. Its ceramic heated bristles detangle as they smooth, which matters on curly hair that tends to tangle more between wash days. The digital display makes it easy to find and repeat a temperature that works for your texture. It’s tuned for 2A-3B curls and thick wavy hair that wants smooth body with movement, not a flat-ironed finish. On tighter 4A-4C coils, treat it as a frizz-and-texture smoother rather than a full straightener.
Drybar The Brush Crush Heated Straightening Brush
Drybar built its blowout-brand reputation on finish quality, and the Brush Crush is the brush in this roundup with both the heat range and the brand backing for coarser, curlier textures. Digital control up to 450°F gives it enough heat to actually smooth denser curls instead of just skimming the surface, and Drybar markets it as working across the full texture range from straight to tightly coiled. It’s also the most expensive pick here by a wide margin, so this is the upgrade for people who plan to use a straightening brush as a regular part of their routine, not an occasional tool.
INFINITIPRO by Conair Tension Control Straightening Brush
The INFINITIPRO by Conair Tension Control brush is proof you don’t need to spend big to get adjustable heat and ionic technology. Its tension-control bristles hold a hair section steady as you pull the brush through, which helps on slippery, frizz-prone curls that tend to slide out of a looser bristle bed. Five heat settings up to 400°F cover most looser waves and curls comfortably. If your texture runs coarser or more tightly coiled, budget for a few extra passes, since this isn’t the highest-heat option here.
ghd Glide Smoothing Hot Air Brush
ghd’s Glide takes a different approach: instead of a dial, you get one engineered 365°F “safe heat” setting, a built-in ionizer, and tangle-free bristles. That consistency is genuinely nice if you have fine-to-medium curls or waves and don’t want to think about temperature at all. It’s a harder sell for very coarse or tightly coiled hair, since there’s no way to turn the heat up if 365°F isn’t cutting through in one or two passes. You’re paying a premium price for ghd’s engineering and a no-guesswork experience, not for raw heat power.
Revlon SmoothStay XL Heated Straightening Brush
Revlon’s SmoothStay XL solves a problem the smaller brushes on this list don’t: volume. Long, dense, or high-volume curly hair takes forever to get through with a narrow bristle bed. The oversized heated paddle covers noticeably more hair per pass, which means fewer total passes and less cumulative heat exposure on a full head of thick curls. Adjustable digital heat settings and auto-off round it out. The tradeoff is maneuverability — the big head is clumsy around bangs, shorter layers, and the hairline, so it works best as a brush for the bulk of your hair rather than detail work.
FAQ
Will a straightening brush fully straighten curly hair? On loose waves and 2A-2C curls, you can get close to smooth. On tighter 3A and up curls and coils, expect meaningful frizz reduction and relaxed texture, not pin-straight results. A flat iron built for thick, curly hair will get coily hair straighter, faster, because plates apply more direct, concentrated heat than bristles do.
What heat setting should coarse curly hair use? Start at the lowest setting that does anything, then move up in small steps. Coarse, dense curls generally need the upper-middle to top of a brush’s range, like the Drybar Brush Crush’s higher settings, while fine or damaged curls should stay low no matter how thick the hair looks.
Do I need to detangle first? Detangle with a wide-tooth comb before using any of these, even the InStyler, which is marketed as a detangling brush. Starting with knotted hair means more passes and more heat contact than necessary.
Can I use these on damp curly hair? No. All five of these are dry-hair tools. Heat styling damp or wet hair causes more damage than styling fully dry hair, curly or not. Let hair air-dry or diffuse-dry first — our diffuser and dryer picks for curly hair cover that step.
How do I keep frizz from coming back? Humidity and moisture are the main culprits. A leave-in conditioner that seals the cuticle helps before you even pick up a heat tool — see our leave-in conditioner picks for curly hair — and a light anti-humidity finishing spray after styling extends the results further.
The Bottom Line
The InStyler Straight Up Max is the best starting point for most curly and wavy textures, since it’s one of the only brushes here actually designed around curly hair instead of adapted from a straight-hair brush. If your curls run coarser or denser and you plan to use a straightening brush regularly, the Drybar Brush Crush’s higher heat ceiling makes it worth the upgrade price. The INFINITIPRO by Conair is the easy entry point if you just want to try the format on looser waves without spending much. Reach for the ghd Glide if you’d rather have one dependable heat setting than a dial, and size up to the Revlon SmoothStay XL if long, dense curly hair is eating up your morning routine. And if pin-straight is the actual goal on tighter coils, a flat iron will still get you there faster than any brush on this list.
| Spec | InStyler Straight Up Max Ceramic Straightening Brush $49.99as of Oct 11, 2026 8.7 | Drybar The Brush Crush Heated Straightening Brush $149.00as of Oct 11, 2026 9 | INFINITIPRO by Conair Tension Control Straightening Brush $23.04-$31.49as of Oct 11, 2026 8 | ghd Glide Smoothing Hot Air Brush $203.00as of Oct 11, 2026 8.3 | Revlon SmoothStay XL Heated Straightening Brush $52.96as of Oct 11, 2026 8.1 |
|---|---|---|---|---|---|
| Technology | Ceramic heated bristle bed built and marketed specifically for thick, curly, and wavy hair | Ionic ceramic heated bristle bed with digital temperature control | Ionic ceramic bristles with tension-control teeth that hold hair as you glide through | Dual ceramic heaters with a built-in ionizer | XL heated paddle with ionic smoothing |
| Display | Digital temperature display | — | — | — | — |
| Safety | Detangling bristle design with anti-scald bristle tips | — | Adjustable heat dial so you can start low | Tangle-free bristles and auto sleep mode after 60 minutes | — |
| Best For | 2A-3B curls and thick wavy hair wanting smooth body, not pin-straight | Drybar says it's designed to work across textures, straight through tightly coiled | Looser 2A-2C waves and curls that just need frizz calmed down | Fine-to-medium curls and waves that just need frizz smoothed at a lower, consistent heat | Long, dense, or high-volume curly hair that wants fewer total passes |
| Use | Dry hair only, after a heat protectant | Dry hair only, after a heat protectant | Dry hair only, after a heat protectant | Dry hair only, after a heat protectant | Dry hair only, after a heat protectant |
| Rating | 8.7 | 9 | 8 | 8.3 | 8.1 |
Prices change daily — tap Check Price for the current Amazon price.
Prices change daily — tap Check Price for the current Amazon price.