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Highlights
Summary
Redken Acidic Grow Full System Scalp & Hair Serum is a lightweight formula that rebalances scalp pH, adds moisture, and promotes denser, thicker-looking hair with our 5% Strength Complex formulation.
Benefits
- Instantly fuller, thicker looking hair*
- 2x less breakage** & stronger hair***
- Clinically tested to hydrate the scalp****
- 91% of GLP-1 users agreed hair feels thicker*****
- Lightweight and non-greasy
- Scalp is instantly rebalanced with moisture
- Instant root lift
- 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% Strength Complex for scalp health and hair strength.
Key Notes
- Italian Lemon
- Neroli
- Cedarwood
Item 2653069
Spray half an inch away from the scalp and roots on clean, damp hair. Massage into scalp with fingers. Can be applied daily on damp or dry scalp as desired.
Aqua / Water / Eau, Glycerin, Hydroxyethylpiperazine Ethane Sulfonic Acid, Caffeine, Peg-40 Hydrogenated Castor Oil, Sodium Hyaluronate, Phenoxyethanol, Citric Acid, Bifida Ferment Lysate, Saccharomyces/Rice Ferment Filtrate, Chlorphenesin, Propylene Glycol, Parfum / Fragrance, Tetrasodium Glutamate Diacetate, Pentylene Glycol, Azelaic Acid, Linalyl Acetate, Carvone, Linalool, Limonene, Citrus Limon Peel Oil, Citrus Aurantium Bergamia Peel Oil, Sodium Benzoate, Citral, Citrus Aurantium Peel Oil, Pinene (N70058696/3)
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Reviews
Write A REVIEWReview Snapshot
by PowerReviews
Ratings Distribution
Hair Type
Most Helpful Positive Review
Just obsessed
[I received this product in exchange for my honest review] This one made me fully obsessed. I started using the product the same time when I started other Redken products, so, I tried everything together. I will share my experience how I apply this serum: I add few drops of serum directly on my sc...
Most Helpful Critical Review
Serum ph balance and growth
[I received this product in exchange for my honest review] This serum has a light and a bit watery. It was easy to apply and I wasn't sure how much to apply, so the first time I put a fair amount of approximately nickel amount and the second time I put a dime amount. I enjoyed massaging into scalp. ...
172 results
I would buy
Hair Type Straight Hair
I received this product complimentary in change for my honest review. This left my hair with a nice texture and was not too heavy. I didn't notice a major change in my hair thickness, but overall liked the product. Would recommend to others wanting to improve hair.
Smells amazing
Hair Type Straight Hair
[I received this product in exchange for my honest review] I really love this spray! I have straight hair and it gives it some body. It smells very fresh and doesn't need much drying time. It's easy to style and leaves your hair looking very shiny. It has not caused any problems with my hair and I'm really enjoying it.
Root lifter!
Hair Type Straight Hair
I received this product complimentary for my honest review. I have very fine and thinning hair. I have used this daily for a couple weeks and notice a significant difference. My hair looks fuller, Doesn't weigh hair down. Great nozzle for direct application.

Hair serum everyone needs
Hair Type Wavy Hair
A Definite must have from the beautiful bottle to the non oily easy absorbed serum that has inspired real results! I am so impressed thank you for the product you sent in return for my honest opinion! This product will definitely be a go to


Great
Hair Type Wavy Hair
[I received this product in exchange for my honest review] Acidic grow full system, density and strength system for thin or flat hair, scalp and hair serum hydration, and creates a dense effect by coding the hair with fiber and reducing breakage used after shampoo and conditioner on clean, damp hair, spraying onto the roots and massage into the scalp! Has a very fresh scent