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Highlights
Summary
Redken Acidic Grow Full System Densifying Shampoo is a lightweight shampoo formulated with 7% Densifying Complex for thin, flat hair that gently cleanses hair while delivering scalp rebalancing benefits.
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 formula
- Helps promote a healthy looking and feeling scalp
- Instant volumizing effect
- 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, along with Caffeine and Prebiotics, to gently cleanse hair, sooth, and hydrate your scalp.
Item 2653017
Apply to wet hair and massage to a rich lather. Rinse thoroughly. Follow with Redken Acidic Grow Full System Densifying Conditioner for best results.
Aqua / Water / Eau, Sodium Laureth Sulfate, Cocamidopropyl Betaine, Sodium Chloride, Propylene Glycol, Parfum / Fragrance, Citric Acid, Cocamide Mea, Sodium Benzoate, Sodium Hydroxide, Hexylene Glycol, Bifida Ferment Lysate, Saccharomyces/Rice Ferment Filtrate, Sodium Lauryl Sulfate, Hydroxypropyl Guar Hydroxypropyltrimonium Chloride, Caffeine, Azelaic Acid, Linalyl Acetate, Carvone, Pentylene Glycol, Linalool, Limonene, Citrus Limon Peel Oil, Citrus Aurantium Bergamia Peel Oil, Citral, Citrus Aurantium Peel Oil, Pinene, Phenoxyethanol, Salicylic Acid
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Reviews
Review Snapshot
by PowerReviews
Ratings Distribution
Hair Type
Most Helpful Positive Review
My ,,must have"!!
[I received this product in exchange for my honest review] After pregnancy and breastfeeding my already thin hair started shedding in a way that honestly scared me even through my blood analysis was good. Styling became frustrating because I love volumes hairstyles. My hair felt fragile, flat and ti...
Most Helpful Critical Review
Not worth it
For reference I'm a licensed cosmetologist and majority of reviews on this product are gifted. I have 2B and 2A hair, its not super thick but it has been getting thicker the last few years. I can usually wash my hair every 4-5 days, sometimes more if I put no product in my hair. I use clean pillow c...
250 results
This shampoo, conditioner and leave in spray is phenomenal!!
Hair Type Straight Hair
This whole system is ridiculous goooood! Just one wash made the difference in my thin flat hair!! I highly recommend these products 💯 %.
A+
Hair Type Wavy Hair
Tried an online sample of this and it did wonders for my hair with just 1 use. Wish I could be part of the promotional offer. Planning on purchasing this once it goes on sale.
Bouncy!
Hair Type Straight Hair
Great shampoo if your hair isn't really dirty. I did have to double shampoo with this one to get it to lather fully. No itchiness when my hair dried and it did give it more volume and texture! I love the smell and the added anti breakage properties!

Clean scalp!
Hair Type Wavy Hair
[I received this product in exchange for my honest review] I love this shampoo! It has a nice citrusy scent with hints of lemon, but not in an air freshener kind of way. It lathers up easily and makes a lot of foam. My scalp genuinely feels so clean after using this shampoo.
I will be using this again and again
Hair Type Straight Hair
[I received this product in exchange for my honest review] I had been losing my hair pretty bad so I really needed help. I started using this and have noticed a significant decrease in shedding. I haven't seen alot of new growth but I definitely plan to continue using.
