Dyson Chitosan Post-style Serum 100ml

Description

Dyson Chitosan post-style serum is a 100 ml finishing serum for a completed style: it holds and hydrates, adds instant shine and definition, and works on every hair type. The serum goes on dry, already styled hair.

What is Dyson Chitosan post-style serum?

Dyson Chitosan post-style serum is a finishing product for a style. Unlike a pre-style cream it is not applied to damp hair but to the finished look, which it holds and hydrates. The serum is developed for all hair types and gives flexible hold without crunch, brittleness or residue. The formula is paraben-free and vegan.

Chitosan, hyaluronic acid and amino acids

• Chitosan: the key ingredient, derived from oyster mushrooms. With Dyson Triodetic technology it forms lightweight, flexible bonds that support the hair strand by strand and protect the style from frizz, even in high humidity.
• Hyaluronic acid: a well-known skincare ingredient with moisturising properties, blended into the serum in two different molecular weights.
• Amino acid blend: part of the formula alongside chitosan and hyaluronic acid.

The ingredient list also holds panthenol and bamboo extract.

How to use the serum

1. Remove the lid and position the pump mid-palm.
2. Push down for one dose. Start with one or two pumps and add more as needed.
3. Sheer the serum gently between your palms.
4. Smooth it through the finished style with your fingers to smooth, shape and finish.

The serum is used at the end of styling, when hair is dry and shaped. Start with a small amount and add as needed. Together with Dyson Chitosan pre-style cream you get long, flexible hold: the cream lays the base, the serum finishes.

Who Dyson Chitosan post-style serum suits

The serum is made for all hair types and goes on a finished style. It suits anyone who wants a last step that adds instant shine and definition, holds the style flexibly and hydrates it. Because it is applied to dry hair, it comes after drying and shaping, when the style is ready and only needs finishing.

The serum as the last styling step

The Dyson Chitosan range has two steps. The first is the pre-style cream, applied to damp, towel-dried hair. The second is the post-style serum, applied to dry, shaped hair. The cream lays the base and the serum finishes the style, so the two products work alongside each other. The order is simple: cream on damp hair first, then drying and shaping, and the serum on dry hair last.

Use the serum in small amounts: start with one or two pumps, sheer it between your palms and smooth it through the hair with your fingers so it spreads evenly. Add more if needed. The serum is meant for dry hair, not wet.

Flexible hold without crunch

The hold of this serum is flexible: the style does not turn crunchy or brittle and the hair is not left sticky or coated with residue. The base is chitosan with Dyson Triodetic technology, which protects the style from frizz in humid air. Hyaluronic acid and the amino acid blend complete the formula, and the formula is paraben-free and vegan.

Where the serum works best

The serum reduces frizz for a smooth finish, especially on straighter styles. On natural curls and waves it adds texture and definition. Hair looks and feels moisturised, soft and smooth. The formula forms a weightless protective shield in up to 80% relative humidity.

Serum or cream: what is the difference?

The pre-style cream goes on towel-dried hair before styling to prime, hold and condition. The post-style serum is for dry, styled hair, to define, hold and hydrate the look. The two products can be used together or separately, depending on your styling routine. Both are designed and tested to work with Dyson hair care devices, and both suit any styling routine, whichever tool you use.

Pack and refill

The 100 ml bottle has a pump that releases one dose at a time, so you choose the amount yourself. The full-size pack is refillable: when the serum runs out, the bottle can be refilled with a new cartridge.

Each pump bottle carries an NFC chip: tap it with a smartphone to open styling guides, dosage guidance and ingredient information, plus a repurchase link when it is time to refill. A refill cartridge generates 76% less waste than a new parent pack (product packaging only), and the used cartridge can be recycled at home (check local guidance). The Dyson Chitosan range won British Winner – Hair at the Marie Claire Prix d’Excellence de la Beauté 2025.

The serum with other products

To complete your routine, browse our styling products. Our range also includes an Olaplex serum and a hair oil.

Frequently asked questions

When should I use Dyson Chitosan post-style serum?

The serum goes on dry, finished hair to add hold, shine and definition to a completed style.

How much serum should I take?

Start with one or two pumps, sheer between your palms and smooth through the hair. Add more if needed.

Does the serum suit all hair types?

Yes, the serum is made for all hair types and goes on a finished style.

What else is in our range?

Our range includes an Olaplex shine mist.

Is the pack refillable and the serum vegan?

Yes, the full-size pack is refillable with a new cartridge, and the formula is paraben-free and vegan.