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Highlights
Summary
Redken Acidic Grow Full Instant Densifying Spray is a lightweight leave-in treatment spray formulated with 5% Densifying Complex that delivers instant fullness and root lift while protecting hair from heat styling up to 450°F.
Benefits
- Instantly fuller, thicker looking hair*
- Tested with GLP-1 users
- 2x less breakage** & stronger hair***
- Clinically tested to hydrate the scalp****
- 91% of GLP-1 users agreed hair feels thicker*****
- Lightweight and non-greasy
- Instant volumizing effect
- Instant root-lifting
- Safe to use on color-treated hair
- *When using system of shampoo, conditioner, serum, and spray
- **System of shampoo, conditioner, serum, and spray vs. non-conditioning shampoo
- ***Tested to reduce breakage. System of shampoo, conditioner, serum, and spray vs. non-conditioning shampoo
- ****When using system of shampoo, conditioner, and serum.
- ***** In a consumer test when using system of shampoo, conditioner, serum, and spray; tested with GLP-1 users experiencing hair loss.
Key Ingredients
- Infused with Azelaic Acid and 5% Densifying Complex to immediately provide fulless and lift to hair.
Key Notes
- Italian Lemon
- Neroli
- Cedarwood
Item 2653070
Spray six inches from clean, damp hair along mid-lengths to ends. Work product throughhair with a comb. Do not rinse. Style as desired. Can be applied daily.
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
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Questions
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Reviews
Review Snapshot
by PowerReviews
Ratings Distribution
Hair Type
Most Helpful Positive Review
Hair looked fuller after first use
[I received this product in exchange for my honest review] I've been using the full system for a little over 6 weeks now. Im currently 9 months post partum with my 3rd (you can see the baby hairs in some photos) so thinning has been a major concern for me.t the whole line/system has a very pleasant ...
Most Helpful Critical Review
Volume and Texture
[I received this product in exchange for my honest review] I have used Redken products in the past and had a favorable experience, so I was very excited to try this. At first I wasn't a fan of this product because it left my hair feeling very stiff and crunchy. I realized it needs to be combed thr...
246 results
Gave volume and length
Hair Type Straight Hair
[I received this product in exchange for my honest review] The acidic grow full product line has really helped grow my hair along with making more volume for me. I typically have very thin hair and it is very hard to give it any movement. While using instant densifying spray I was able to achieve a little bit more length and a little bit more volume. Simple to use after the shower and doesn't dry out my scalp like some products. Spray nozzle held up well, I ended up wiping it off after use but it only took me a second to make sure there was no buildup on the nozzle. A nice fine mist helps to make even distribution of the product in my hair. Definitely a good system.



I would buy this again and again!
Hair Type Straight Hair
Redken stepped it up with this one. I have very fine long hair, it gets flat the second I style it. This spray gives my hair enough grip to remain full and bouncy even after a full day walking NYC. I love the smell and the spray bottle allows it to spray in my hair evenly

Best grow full system
Hair Type Wavy Hair
[I received this product in exchange for my honest review] I love the Redken line, leaves my hair revitalizing, protects my hair from high temperatures , I love to see my hair with more volume, thanks to this line, my hair was shapeless, very damaged, and now my hair has changed a lot,

Wonderful spray but can build up on scalp
Hair Type Wavy Hair
[I received this product in exchange for my honest review] This spray is super easy to use! The spray nozzle works really well and sprays fine mist. One complaint I have with it is that if you spray it too close to the scalp or if you build it up, it leaves a greasy residue in the spot and eventually dries to be a sort of crust.
Lightweight, but Underwhelming Spray
Hair Type Straight Hair
I like this spray because it is lightweight and non-greasy, but I didn't see much of a difference as far as adding volume to my hair or reducing thinning hair long-term. I don't think this is that much better than other similar products on the market. Also, since this is 1 of 4 steps in the Redken Acidic Grow Full System, I must add that the entire 4-step "system" is far too many products for me to utilize. I would prefer one, single product to add to my existing hair-care routine.