Fine, flat hair has a habit of going full deflated-balloon by mid-afternoon — all the promise of volume, none of the follow-through. The Redken Acidic Grow Full System Instant Densifying Spray is the root-lifting mist that talks your hair up before it gets the chance to talk itself down.
TL;DR: A lightweight leave-in mist from Redken's Acidic Grow Full System that lifts fine, flat hair at the root for an instantly fuller, thicker-looking finish. Formulated with azelaic acid and a 5% densifying complex, it coats each strand to help reduce breakage from brushing and shields against heat styling up to 230°C — with no stiffness, no stickiness and no residue.
Product Details and Benefits
- Instant root lift — designed to lift fine, flat or thinning hair right at the root for an immediately fuller, thicker-looking result, all while hair grows as usual.
- 5% densifying complex — a blend of azelaic acid, caffeine and prebiotics that coats the hair fibre for visible body and helps support a balanced, hydrated scalp.
- Helps reduce breakage from brushing — by coating each strand, it leaves fine hair better protected against everyday wear and tear.
- Heat protection up to 230°C — a genuine styling safety net for blow-drying and hot tools, not just a volumiser.
- pH-balanced, lightweight formula — adds lift without the crunch, leaving hair soft, touchable and residue-free.
- Best for thin, flat or fine hair — a fast-drying leave-in step that's gentle enough for daily use.
How to Use
- Start with clean, damp hair. This one's a leave-in, so there's no rinsing to remember.
- Hold the bottle roughly 15cm away and mist evenly, concentrating on the roots where the lift actually lives.
- Comb through from mid-lengths to ends so the formula coats every strand.
- Style as you like — blow-dry for maximum height, or air-dry for effortless, lived-in body.
Pro tip: For lift that survives past morning coffee, mist the hidden under-layers at the roots first, then flip your head upside down as you blow-dry. You're building volume from the foundation up rather than just dressing the surface.
Why You'll Love It
If your hair's idea of volume is "here for a good time, not a long time," this is the leave-in that finally gets it to commit. Add the Redken Acidic Grow Full System Instant Densifying Spray to your cart and give fine, flat hair the lift it's been faking.
