Redken Instant Densifying Spray for Thicker-Looking Hair — Acidic Grow Full, 5% Densifying Complex & Heat Protection to 450°F

If your hair looks flat at the roots or you want an easy way to add body without weighty products, this spray was designed to create immediate lift and fuller-looking hair. Formulated with a 5% Densifying Complex and azelaic acid, it works as a styling and treatment hybrid: you can mist it in before blow-drying or heat styling to shape hair while preserving style integrity.

How does this spray give instant volume and root lift?

The formula deposits a lightweight film at the roots that helps hair strands expand and stand away from the scalp, producing visible fullness right after application. It’s engineered to deliver immediate cosmetic thickness without leaving sticky or stiff residue.

• 5% Densifying Complex creates perceptible body at the root.
• Light lotion-mist texture avoids weighing hair down.
• Azelaic acid supports a lifted appearance by targeting the hair base.
• Absorbs quickly so you can style immediately after spraying.

Can I use it with heat tools and what protection does it provide?

The spray provides thermal defense up to 450°F, making it suitable for blow-dryers, flat irons, and curling tools. Use as a prep step to protect strands from high temperatures while reinforcing the lifted shape you create with styling tools.

• Heat-protection rated to 450°F for most styling appliances.
• Applies smoothly before blow-drying, curling, or flat-ironing.
• Helps maintain shape and fullness through styling sessions.
• Non-greasy finish that won’t compromise styling grip.

Is this suitable for thin or fine hair and how should I apply it?

This spray is formulated with thin and flat hair in mind—its lightweight feel adds volume without burdening fragile strands. For best results, mist at the roots on towel-dried hair, comb through lightly, and blow-dry with a round brush for maximum lift; reapply sparingly to dry hair for a refresh.

• Works well on fine, limp, or thinning-prone hair types.
• Apply to towel-dried hair focusing on the root zone.
• Style with heat tools for enhanced lift and longevity.
• Can be layered with other Acidic Grow Full products for a system effect.

Who is this for? If you want an easy, salon-grade way to add immediate volume and root lift—especially if you have fine or flat hair—this Redken spray offers a styling-first solution with added care features. It’s ideal for people who frequently use heat tools and those following a fuller-hair regimen who prefer lightweight, fast-absorbing formats. Use it alone for quick boosts, or combine with Shampoo, Conditioner, and Scalp & Hair Serum from the Acidic Grow Full system to support a fuller-looking finish.

Ingredients

1400509RK12 - Aqua/Water/Eau, Alcohol Denat., PVP, Caffeine, PEG-40 Hydrogenated Castor Oil, Propylene Glycol, Triethanolamine, Phenoxyethanol, Acrylates/Beheneth-25 Methacrylate Copolymer, Parfum/Fragrance, Caprylyl Glycol, Azelaic Acid, Bifida Ferment Lysate, Saccharomyces/Rice Ferment Filtrate, Linalyl Acetate, Carvone, Linalool, Limonene, Citrus Limon Peel Oil, Pentylene Glycol, Citrus Aurantium Bergamia Peel Oil, Citral, Citrus Aurantium Peel Oil, Pinene, Geraniol, Terpineol, Geranyl Acetate, Citronellol, Eucalyptus Globulus Oil, Mentha Piperita Oil, Sodium Benzoate. (N70058506/3).