Anyone with fine hair that goes flat at the roots or lacks body, whether it is cut short or worn long. Biolage confirms it is suitable for colour-treated hair and for fine curly hair that wants lightweight bounce. It is a salon-brand styling product but simple enough for everyday use at home, with no technique beyond spraying and styling.

Most volumizers for fine hair trade softness for lift: the more body they add, the crunchier or drier the hair feels. Volume Boost Root Lift Spray pairs its lifting polymers with micro-filtered soy protein, so the polymers open up space between fibres for fullness while the protein helps fine hair hold its moisture. You get bounce at the root that still moves when you touch it, and it slots in as the prep step after Volume Boost Shampoo and Conditioner.

1. Wash and condition, ideally with Volume Boost Shampoo and Conditioner.
2. Spray onto damp hair from roots to ends.
3. Leave it in and style as usual.

Pros:

• Gives root lift with a soft, touchable hold rather than a stiff or sticky finish
• Silicone-free, so it adds body without coating fine strands
• Soy protein helps fine hair keep its moisture and softness while it is being volumized
• Vegan and Leaping Bunny approved

Cons:

• Made for fine hair; thick or coarse hair will get little visible lift from it
• Contains fragrance and several listed fragrance allergens (such as linalool, coumarin and limonene), which matters for sensitive scalps
• The before/after results Biolage shows were measured with the full shampoo, conditioner and spray routine, not the spray alone