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Dyson Chitosan™ Post-style serum

All hair types
Dyson Chitosan™ Post-style serum
All hair types
Dyson Chitosan™ Post-style serum
In stock
HK$490.00
Dyson Chitosan™ Post-style serum

Holds and hydrates your end style.

Flexible all-day hold.1 Even in high humidity.2

Up to 50% less frizz.1

For instant definition while maintaining shine.

Buy from Dyson.com

Introducing our first hair care formulations​

Dyson Chitosan™ styling products

A Dyson Chitosan Pre-style cream with model
Hair technology

Post-style serum

Who’s it for?
For all hair types.
Hold and hydrate your end style, with instant shine and definition.
Work through the hair with your fingers to smooth, define and enhance your style.

A drop of Dyson Chitosan Post-style serum is dispensed from the bottle.

Powered by chitosan​

[chi-to-san]: A complex macromolecule, derived from oyster mushrooms – and the key to our flexible hold.

Cloud-like fungi on a dark background.

Core benefits

  • Molecular structure icon in pink.

    Dyson Triodetic™ technology

    Powered by chitosan. Locks in flexible styles, strand by strand.

  • Amino acid icon in pink

    Amino acid blend

    Enriched with a blend of 12 amino acids.

  • Humidity icon in pink.

    Humidity shield

    Weightless protective shield in up to 80% relative humidity.2

  • Pump mechanism icon, in pink.

    Refill and reuse

    All of our full-size formulation products are refillable and built to last. Your used cartridge can be recycled at home.

Create the look

Explore how the looks were created and the results for naturally straight and wavy hair with Dyson Chitosan™ styling products.

Explore Dyson Beauty

Frequently asked questions

Dyson Chitosan™ Post-style serum should be applied on dry, styled hair to define your look.

Start with one or two pumps, sheer gently through palms and work through the hair with your fingers to smooth, define and enhance your style. Add more product as needed.

Less is more with our Post-style serum. We recommend starting with one or two pumps, building as needed for your hair.

Our Dyson-engineered applicator is rigorously tested to deliver the same amount pump after pump, so once you’ve established the right amount for your hair, you can count on your dosage, every time.

The Dyson Chitosan™ hair styling range is designed to prime and define your styles, for flexible all-day hold.1 You can use the products together or separately, depending on your styling routine.

Use Dyson Chitosan™ Pre-style cream before styling, on towel-dried hair, to prime, hold and condition. Dyson Chitosan™ Post-style serum is designed for use on dry, styled hair to define, hold and hydrate your look. Each product has a range of key ingredients that support additional benefits to the hair, including less frizz, a conditioned feel, natural movement, smoothness and shine.

Dyson Chitosan™ Post-style serum has been developed for use on finished styles on all hair types, to give 2x longer hold1, without crunch, brittleness or residue, for hair that looks and feels moisturised, soft and smooth. The Post-style serum is great for reducing frizz for a smooth finish, especially on straighter styles, or you can use the serum on natural curls and waves to add texture and definition.

The Dyson Chitosan™ Post-style serum has been engineered for all hair types to help your finished style feel moisturised, soft and smooth, with two-times longer hold.1 It’s designed to be used on your finished styles.

Chitosan is the hero ingredient in our Dyson Chitosan™ hair styling range. Chitosan is a complex macromolecule derived from oyster mushrooms. This complex macromolecule helps create flexible bonds that support hair strand by strand, for flexible all-day hold1, even in high humidity.2 It’s the foundation of our Dyson Triodetic™ technology. Our key ingredient is also supported by oils for a formula that helps condition the hair surface, reducing frizz and giving a soft, shiny finish.

Yes. All our full-size formulation packaging is refillable. When you’re approaching the end of your original product, simply order a refill and follow the instructions on the cartridge to replace. Your used cartridge can be recycled at home (check local guidance). Buying a refill generates 76% less waste than buying a new parent pack (product packaging only).

Owner support

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Choose your model

1vs. untreated hair.
2Tested at relative 80% humidity.
3vs. untreated hair. Tested at relative 80% humidity.
4Based on tests for breakage resistance on real hair bundles. Testing conditions: Bleached hair bundles were straightened 60 times with a hair straightener and then divided into two groups: one applying the Dyson Chitosan™ Post-style serum and the other group without the product. Both groups underwent 1000 repetitions of brushing to compare hair breakage. Actual results may vary by individual. Testing organization: Guangzhou Branch of TÜV Rheinland.
5Based on tests measuring cuticle roughness on real hair bundles. Testing conditions: Hair bundles were treated 20 times with a hair styler and then divided into two groups. One group used the Dyson Chitosan™ Post-style serum for 2 weeks, compared to the other group that did not use the product, to assess differences in cuticle roughness. Actual results may vary by individual. Testing organization: P&K Skin Research Center, Korea.​