Anyone with fine, flat or limp hair who wants more body and root lift, particularly if they blow-dry: UNITE says the spray works best with heat.

It can also be used to add texture and definition. UNITE states it is safe on hair extensions and colour-treated or chemically treated hair, so it suits salon clients as well as home users.

BOOSTA Volumizing Spray is the styling step that makes the rest of the BOOSTA routine pay off. It goes on damp hair before the blow-dry, so the lift created at the roots with a round brush holds with a natural, flexible finish instead of the heavy feel of a mousse or the stiffness of a hairspray. The same bottle also adds texture and definition, and UNITE builds in UV and thermal protection for the blow-dry.

1. Cleanse and condition with BOOSTA Shampoo and Conditioner, then towel-dry.
2. Spray thoroughly onto damp hair, or directly at the roots for targeted lift.
3. Gently comb through to distribute to the ends. Do not rinse.
4. Blow-dry using a round brush at the roots to increase volume.
5. Finish with your favourite UNITE styling and finishing products.

Pros

• Weightless volume with a natural, flexible finish rather than a stiff, crunchy one.
• Versatile: all-over body, targeted root lift, or texture and definition.
• Adds UV and thermal protection before blow-drying, according to UNITE.
• Kelp, castor oil and rice protein add some conditioning to a styling spray.

Cons

• Contains denatured alcohol, which can feel drying with very frequent use.
• Needs heat for full effect; air-dried results are lighter.
• Fragranced, with listed fragrance allergens.