Reactive Pro · Professional
Reactive Pro Shampoo (1000ml)
Opens every Reactive Pro service. Reach for it whenever a straightening service is booked on blonde, highlighted or sensitised hair, to remove build-up and equalise porosity before Smooth Therapy goes on.
- Ships from the UK
- 2-step protocol
- Sold individually or as the full kit
Dispatch from 1 October 2026. Orders placed now are reserved and dispatched from that date.
What it does
Reactive Pro Shampoo is Step 1, Preparation, of Piur London's two-step Reactive Pro straightening protocol. Its Deep Cleansing Purifier formula helps remove product build-up while aligning the cuticle layer, preparing the fibre to receive the LuminAlign System treatment in Step 2. The label positions it for porosity equalisation and damage prevention along the whole length, which matters most on blonde and highlighted hair, where porosity is rarely even from root to ends.
Reactive Pro Shampoo carries the Formaldehyde Free seal and the V-Label International vegan certification on the label, the same as Smooth Therapy: a decisive claim for a UK client asking whether a straightening service uses formaldehyde.
Key actives (as on the label)
- Tamarindus Indica Fruit Extract, tamarind fruit extract
- Lauryl Glucoside, gentle plant-derived cleansing agent
- Cocamidopropyl Betaine, mild secondary surfactant
- Glycerin, humectant
- Pectin, conditioning film former
Contains Sodium Laureth Sulfate: this is not a sulphate-free formula.
When to use it
As the opening step of the Reactive Pro protocol, immediately before Smooth Therapy, on blonde, highlighted or otherwise sensitised hair booked for a straightening service.
How to use it
- Apply to wet hair.
- Massage gently, without rubbing vigorously.
- Leave for 2 to 3 minutes.
- Rinse with cool water to help seal the cuticle.
- Dry the hair fully before proceeding to Smooth Therapy.
What not to do
- Professional use only.
- Do not use on damaged or broken skin.
- Do not skip this step before Smooth Therapy: porosity needs to be equalised first so Smooth Therapy meets the same fibre from root to ends.
- Do not proceed to Smooth Therapy on hair that is still damp.
The system
Reactive Pro
Hair type Blonde, highlighted or otherwise sensitised hair booked for the Reactive Pro straightening protocol.
Not for Not sold or positioned as a stand-alone clarifying shampoo; its role is preparing the fibre for Smooth Therapy, not a general wash. Not the right prep step for non blonde, chemically resistant hair booked for Piur London's higher heat smoothing line; that line opens with its own shampoo.
Reactive Pro is Piur London's straightening protocol built for the hair that suffers most from a smoothing service: blonde, highlighted or otherwise sensitised fibre, the segment where a standard high heat progressive comes out flat, brassy and stripped of movement.
Realignment runs on a glyoxylic acid base, the same family of active used across Piur London's straightening range, thermally sealed by the iron rather than by formaldehyde. A violet pigment built into the Smooth Therapy formula works on the reflect while the fibre is aligned, which is why the label caps this specific product at a lower heat ceiling than Piur London's other smoothing line.
In the chair, confirm the hair is blonde, highlighted or sensitised before reaching for this line rather than the higher heat option, dry completely between the two steps, and never take the iron above the ceiling the label declares, because that ceiling is what protects the reflect this line is built to preserve.
Less volume, same colour, hair that still moves.
Protocol
Your Reactive Pro protocol
Reactive Pro Shampoo, Deep Cleansing Purifier
2 to 3 minutes, cool water rinseRemoves product build-up and equalises porosity along the whole length, preparing the fibre to receive Smooth Therapy. Porosity equalisation matters more here than on a general clarifying shampoo, because porosity is rarely even along blonde or highlighted lengths.
Apply to wet hair, massage gently without rubbing vigorously, rinse with cool water to help seal the cuticle before moving to Step 2. Dry the hair fully before Smooth Therapy goes on.
Smooth Therapy, LuminAlign System
40 minute pause, then iron at 160 to 190CRealigns the fibre on a glyoxylic acid base while a violet pigment lifts the reflect, engineered on the label for blonde and sensitive hair. Applied in fine strands, 1 to 2cm away from the scalp.
Leave to process 40 minutes at room temperature, rinse until fully removed, dry the hair 100 percent, then flat iron in fine strands, 10 to 15 passes per section.
One protocol, sold as a single decision below.
