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Product Overview
Key Features
- Hair Styler, 1650 Watt, 3 Airflow Settings
- 4 Heat settings with temperature regulation
- Coanda Technology tames frizz and flyaways
- Curl, volumise, smooth and dry with 2.8 metre cord
Bonus Shark FlexStyle FrizzFix Finishing Tool when you purchase an eligible Shark FlexStyle(AR)
Key Specifications
- Brand:
- Shark
- Model Number:
- HD421SL
- Heating:
- 3 heat levels plus cool shot, Measures and regulates air temperature to ensure no heat damage
- Ionic Conditioning:
- Coanda Technology
- Power:
- 1650W
- Supplier Colour:
- Stone
Hair & Grooming
- Barrel Size:
- 35mm auto wrap curlers
Options
- Functions:
- Stylish attachments to Curl, Volumise, Smooth and Dry hair, Auto wrap curlers to curl hair, Styling Concentrator to style and dry hair
General Information
- Type:
- Hair Styler
- Family:
- FlexStyle
- Colour:
- Silver
- Speeds:
- 3
- Additional Features:
- Hair Dryer and Styling System In One
- What's In The Box:
- Styling Concentrator, Oval Brush, 2 x Auto Wrap Curlers, Soft Storage Bag
Warranty
- Manufacturer's Warranty:
- 2 Year
Hair & Grooming
- Barrel Size:
- 35mm auto wrap curlers
General Information
- Type:
- Hair Styler
- Family:
- FlexStyle
- Colour:
- Silver
- Speeds:
- 3
- Additional Features:
- Hair Dryer and Styling System In One
- What's In The Box:
- Styling Concentrator, Oval Brush, 2 x Auto Wrap Curlers, Soft Storage Bag
Product Dimensions
- Product Height (mm):
- 286
- Product Width (mm):
- 46
- Product Depth (mm):
- 46
- Product Weight (g):
- 660
- Cord Length (m):
- 2.8
Box Dimensions
- Box Height (mm):
- 126
- Box Width (mm):
- 405
- Box Depth (mm):
- 217
- Box Weight (kg):
- 2
Product Reviews of Shark FlexStyle Air Styling And Drying System Stone

Overall Rating Snapshot
4.8 out of 5 stars from 30 reviews
100% of users recommend this product
Awesome product
Very good product, my partner like it
Monil Puri
Confirmed purchase 9 March 2026
Published on 1 April 2026
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Worth every title
I’m very happy with the Shark FlexStyle Air Styling and Drying System. It dries my hair quickly, leaves it smooth, and the different attachments make styling really easy. It feels lightweight and looks beautiful in the Stone colour. Definitely worth it!
Hannah K.
Confirmed purchase 8 February 2026
Published on 4 March 2026
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Easy to use
I’m loving my Shark FlexStyle still learning to use it different ways thank god for YouTube
Julie
Confirmed purchase 8 January 2026
Published on 3 February 2026
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Easy to use!
Easy to use and quick to complete a whole head of hair for styling.
Sarah
Confirmed purchase 5 January 2026
Published on 29 January 2026
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Awesome features
Excellent
Vidhi Suthar
Confirmed purchase 1 January 2026
Published on 28 January 2026
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Great gift
They loved it
JM
Confirmed purchase 17 December 2025
Published on 14 January 2026
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Loved it
Mrs loved its features and how useful This little gadget is and its attachments
Varun kapoor
Confirmed purchase 25 November 2025
Published on 14 January 2026
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Easy to use
Purchased this product for my Mum as a gift. It was easy to use and I loved how easy it was to swap over the attachments and change from curler/hair dryer etc.
Hayley
Confirmed purchase 16 November 2025
Published on 14 January 2026
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Shark Flex Hair Dryer
Second one I have purchased. Gifted to Daughter who absolutely loves using the curling attachments. Said her hair actually feels softer after using. Brush attachment works well and happy with the lightweight frame of dryer.
Dani Wilkinson
Confirmed purchase 5 December 2025
Published on 31 December 2025
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
So much better than other big brands!
Curls last all day, the anti frizz attachment is super effective, great hairdryer
Mother of a daughter who is hair obsessed
Confirmed purchase 7 December 2025
Published on 30 December 2025
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
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ABOUT THE GOOD GUYS REVIEWS
The Good Guys product reviews are collected from verified purchasers who may have received an incentive in return for providing an authentic review.
Q: Which heat and airflow settings are available on the Shark FlexStyle Air Styling And Drying System?
A: It has 4 heat settings and 3 airflow settings.
Q: What is the wattage of the Shark FlexStyle Air Styling And Drying System?
A: The power rating is 1650 watts.
Q: What attachments come with the Shark FlexStyle Air Styling And Drying System?
A: It includes a styling concentrator, oval brush, two 3.5cm auto-wrap curlers, and a soft storage bag.
Q: How does the Shark FlexStyle manage frizz and heat damage?
A: The Coanda Technology is used to manage frizz and minimise heat damage by measuring temperatures 1000 times per second.
Q: What are the weight and cord length of the Shark FlexStyle Air Styling And Drying System?
A: The weight is 0.66kg, and the cord length is 2.8 metres.