With its lightweight build, ionic technology, and silicone-cushioned paddle brush, this hot air dryer offers simple, everyday smoothing at a wallet-friendly price — ideal for medium to long hair that needs quick detangling and shine.
BeautiLAB Overall: 4.2 out of 5
The Knot Dr. Smoothing Dryer Brush is Conair’s fuss-free paddle tool built for effortless daily styling. At just 13 oz, it’s among the lightest in its category, yet it delivers gentle, even airflow through a silicone-cushioned base and nylon bristles. While it doesn’t feature smart sensors or heat customization, its simplicity is a plus for users who want a reliable blow-dry brush without spending a fortune.
The best part? It’s part of a modular system — so while this version includes the paddle brush only, you can separately purchase compatible brush heads, including two round barrels, a diffuser, a detangling comb, and more for added versatility.
👉 Want to see how it stacks up against other top picks? Check out our full guide to the Best Hot Air Brushes.
Who It’s For:
This blow dry brush is best for:
✅ Fine to medium hair types
✅ Frizz-prone strands that need daily smoothing
✅ Anyone who wants an easy, affordable tool for post-shower drying
✅ Users who prefer a paddle brush for quick straightening over volume
✅ People looking for a quiet, lightweight, travel-friendly option
It is not ideal for coarse, curly, or very thick hair, as its airflow and tension aren’t strong enough for intense smoothing or shaping.
What Sets the Knot Dr. Smoothing Dryer Brush Apart:
- Detachable design – Works as a standalone handle or with other Knot Dr. brush heads
- Ionic technology – Reduces frizz and boosts shine for sleeker results
- Cushioned silicone paddle – Smooths hair gently with less tugging
- Lightweight and quiet – Only 13 oz with low 94 dBA noise level
- Compatible attachments – Works with Conair’s full Knot Dr. collection (round barrels, diffuser, detangler)
While it lacks advanced tech features, it’s one of the most versatile paddle-style dryers under $50 — especially for gentle detangling and fast daily styling.
The Knot Dr. All-in-One Specifications
| RRP: $40 | Barrel shape: paddle |
| Barrel width: 2.0″ | Paddle material: silicone-cushioned |
| Weight: 13 oz | Cord length: 6 ft |
| Heat settings: 175°F / 235°F | Noise level: 94 dBA |
| Wattage: 1000 watts | Voltage: 125 volts (single voltage) |
| Model name: BC120 | Warranty: 3 year |
Performance Breakdown
| Category | Score (1–5) | Notes |
|---|---|---|
| Heat Power | ⭐⭐⭐⭐☆ (4) | Reaches up to 235°F — gentle yet effective for fine to medium hair |
| Ease of Use | ⭐⭐⭐⭐☆ (4) | Lightweight and compact, but attachment switching is not seamless |
| Grip & Control | ⭐⭐⭐⭐☆ (4) | Comfortable handle, decent balance, easy to maneuver |
| Styling Range | ⭐⭐⭐☆☆ (3) | Only paddle brush included — limits curl or volume styling |
| Frizz Control | ⭐⭐⭐⭐☆ (4) | Ionic tech and cushioned base smooth flyaways well |
| Travel Friendly | ⭐⭐⭐☆☆ (3) | Lightweight and detachable, but no dual voltage or storage case |
✅ What We Like
✨ Design & Build
- Lightweight (13 oz) — easy to maneuver for everyday use
- Silicone-cushioned paddle — gentle on the scalp and minimizes breakage
- Detachable handle — compatible with other Knot Dr. attachments
- Compact and simple design — no extra bulk
💡 Performance & Technology
- Ionic technology — reduces static and adds shine
- Heats up to 235°F — sufficient for smoothing fine to medium hair
- Gentle airflow — won’t fry or overly dry strands
🔌 Ergonomics & Convenience
- Handle stays cool during use
- 3-year warranty — rare at this price point
- Removable filter — helps maintain long-term performance
- Budget-friendly — solid performance for under $50
❌ What We Don’t Like
⚡ Power & Heat
- Only one speed — all heat levels operate at the same airflow
- Not ideal for coarse or thick hair — may lack tension and heat
🔧 Features & Usability
- Paddle-only — no included styling options for curl or lift
- Bristles may struggle with dense or textured hair
- Swapping brush heads (sold separately) isn’t seamless — attachment mechanism is a bit stiff
- Short 6-ft cord — may limit flexibility compared to 9-ft pro cords
✨ Design & Build
The InfinitiPRO by Conair Knot Dr. Smoothing Dryer Brush is built around a silicone-cushioned paddle brush, offering a soft, flexible surface that gently conforms to the scalp as you style. This makes it ideal for reducing tension and minimizing breakage — especially on fine or easily damaged hair.
The brush section is 2″ wide and 4″ long, giving it enough surface area to smooth medium to long hair efficiently. It features 1.75 cm nylon bristles with rounded tips, designed for painless detangling and gentle tension.
While it only comes with one paddle brush attachment, the detachable handle is compatible with other Knot Dr. heads sold separately — including round brushes, a diffuser, and a double-row detangler. That gives it more long-term flexibility than most single-head paddle dryers in this price range.
Its minimal black-and-teal aesthetic and compact build make it feel clean and user-friendly, without any unnecessary bulk or gimmicks.
💡 Performance & Technology
The InfinitiPRO by Conair The Knot Dr. Smoothing Dryer Brush keeps things simple but effective. It offers three temperature options — cool, low (175°F), and high (235°F) — using a single-speed airflow, meaning airflow power stays consistent no matter the heat level.
Its 1000W motor provides gentle yet steady airflow, ideal for fine to medium hair types or anyone who prefers lower heat for daily styling. While it may not dry thick or coarse hair as quickly as high-wattage models, it does a solid job of taming frizz and smoothing hair without excessive heat exposure.
The ionic technology helps reduce static and boost shine, making hair feel softer and sleeker after each pass. And because it doesn’t feature rotating parts or advanced heat sensors, it’s an approachable tool for beginners or those looking for a low-maintenance, everyday option.
Despite the soft paddle and lower wattage, the brush barrel still reached 235°F on high, and the handle stayed cool during testing — around 95°F — even after extended use, which adds to its comfort and safety.
🔌 Ergonomics & Convenience
The InfinitiPRO by Conair Knot Dr. Smoothing Dryer Brush is one of the lightest hot air tools we’ve tested at just 13 oz, making it comfortable to use even during longer styling sessions. Its 14″ length is compact and manageable, and the 1.65″ handle provides a decent grip, though it may feel slightly thick for smaller hands.
The controls are located on the handle, which makes switching heat settings easier while styling. However, unlike other models with separate speed and heat settings, all three heat levels operate at a single speed — a simpler setup, but with less precision.
The 6-ft swivel cord is shorter than average but still workable for most setups. A Velcro strap is included for tidy cord storage.
One thing to note: although the brush has a detachable base and is compatible with other Knot Dr. attachments, the changing mechanism is not the most intuitive. It can take a bit of effort to attach and remove brush heads, especially compared to models with a one-click lock-in system.
Still, we appreciate that it includes a removable filter, which helps extend the tool’s life and makes maintenance easier. And like most Conair tools, it comes with an ALCI safety plug for added protection.
🔄 How It Compares
If you’re exploring alternatives to the InfinitiPRO by Conair The Knot Dr. Smoothing Dryer Brush, here’s how it compares to other paddle-style tools and all-in-one dryers:
The InfinitiPRO by Conair The Knot Dr. All-In-One Oval Dryer Brush is a better choice if you’re looking to add volume or curl. With its oval barrel and stronger airflow, it’s designed more for styling than simple smoothing. However, it’s bulkier, louder, and less gentle on fragile strands compared to the paddle version — which is more suited to everyday detangling and quick blowouts.
The Drybar The Smooth Shot Paddle Brush Blow-Dryer is a premium paddle-style brush with a ceramic-coated barrel and a more powerful motor. It heats up faster and can smooth thicker hair types more effectively, but it comes at nearly 3x the price. The Conair Knot Dr. can’t match its performance on coarse hair, but it’s much more affordable and lighter for regular use.
🏁 Final Verdict: Simple, Gentle Styling Without the Fuss
The InfinitiPRO by Conair Knot Dr. Smoothing Dryer Brush isn’t a high-powered multitasker — but that’s exactly its strength. With a flexible paddle, ionic airflow, and lightweight build, it’s perfect for everyday detangling and smoothing on fine to medium hair. While it lacks interchangeable brush heads out of the box, the detachable handle works with other Knot Dr. attachments for more styling down the road. If you want an affordable, no-frills hot air brush that’s kind to your hair and easy on your wrist, this one delivers.
