KMS lists it for all hair types, with fine to medium, limp hair that lacks volume and body as the ideal match. It is a good fit for anyone who blow-dries and wants the style to keep its shape through the day and in humid weather.

Mousse is forgiving to apply, so it works for everyday home styling. Stylists can also use the double application (damp, then dry) when a client needs more hold.

It is less suited to people who want a firm, set finish; KMS describes the hold as flexible with a touchable feel.

A good blowout on fine hair usually starts with something that gives the strands grip. This foam provides that grip, adds body from root to tip and protects against heat and humidity, which are the two things most likely to flatten a style. KMS's figures of up to 70% more volume and up to 4 times more body (versus untreated hair) describe what it is built to do, while the flexible hold keeps hair soft enough to move.

1. Shake the can.
2. Work the foam through towel-dried hair (it can also be applied to wet hair).
3. Blow-dry.
4. For maximum strength and styling power, apply a little more to dry hair after blow-drying.

What it does well: it combines three steps in one product (volume, humidity protection and heat protection up to 230°C / 446°F), and KMS says the hold stays touchable rather than crunchy. The option to reapply on dry hair lets you adjust strength without switching products.

What to keep in mind:

• Contains PEG/PPG-18/18 dimethicone, a silicone-derived ingredient, which matters if you avoid silicones entirely.
• Aerosol with hydrocarbon propellants (isobutane, propane, butane); keep away from heat and flame.
• Flexible hold rather than firm, so it won't lock in a structured updo on its own.
• Fragrance includes limonene and linalool.