People with fine, thin, or flat hair who want volume and body without a heavy, stiff, or greasy-feeling product.

It's not intended for coarse, thick, or very curly hair types looking for a strong, all-day hold, since it's formulated specifically around lifting and thickening fine strands.

Most mousses are built as one general-purpose volumizer, but Thickefy is formulated around a specific problem: fine hair that falls flat under regular styling products because they're too heavy for it. The liquid-to-foam technology is meant to solve that by expanding into an airy foam that adds body without the weight of a denser mousse.

That focus is also its limitation — it's not a universal volumizer, and someone with thick or coarse hair looking for strong hold or frizz control would likely get more from a different Sebastian styling product built for that hair type.

Two application options depending on the desired finish:

• For a blow-dried style: apply to damp hair from roots to ends, then blow-dry for volume and lift
• For an air-dried, textured finish: work into dry hair and scrunch to add texture and hold

Pros:

• Foam format spreads evenly through fine hair without the clumping that thicker mousses can cause
• Works both as a blow-dry volumizing primer and as a scrunch-in texturizer for air-drying
• Marketed with heat protection, useful before blow-drying or other hot tools

Cons:

• Contains Methylparaben, so it's not suitable for anyone specifically avoiding parabens
• 'Long-lasting hold' is still a flexible/medium hold, not a strong-hold product for elaborate updos
• Formulated specifically for fine hair, so it's a poor fit for coarse or thick hair needing more taming or frizz control