Redken
Acidic Grow Full System Densifying Shampoo

Acidic Grow Full System Densifying Shampoo is rated 4.4 out of 5 by 110.
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Acidic Grow Full System Densifying Shampoo
Preview image 1 of Acidic Grow Full System Densifying Shampoo
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10.1 oz.
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What It Is

Redken Acidic Grow Full System Densifying Shampoo for Thin Hair is a lightweight formula that rebalances the scalp with hydrated feel and instantly volumizes hair.

What It Does

• Break-free: See the fullness of up to +5,000 hair fibers*

• Gentle cleansing for thin hair

• Rebalances scalp with hydrated feel

• Instant volumizing effect

 

*reduced breakage from brushing with system of shampoo + conditioner + serum + spray vs non-conditioning shampoo

What Else You Need to Know

The Acidic Grow Full Density & Strength System provides a healthier feeling scalp that is balanced with moisture* and instantly thicker, fuller looking hair that is 2x stronger**

 

*shampoo + conditioner + serum + spray vs unwashed hair

** shampoo + conditioner + serum + spray vs non-conditioning shampoo

Apply to wet hair. Massage into lather. Rinse thoroughly. For best results, follow with Acidic Grow Full System Densifying Conditioner.

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

Purchases made in SalonCentric stores may be returned to any SalonCentric store. Purchases made through SalonCentric Customer Service, SalonCentric Business Partners, and SalonCentric.com orders Sold and Shipped by SalonCentric may be returned to a SalonCentric store; however, the return must not exceed $450 and must include the original receipt, packing slip, or invoice. For returns in-store of online orders, the refund will be credited back to the original payment method once the return has been processed. For SalonCentric.com Online Exclusive orders sold and shipped by third-party sellers, please see more details linked below for return steps.

The SalonCentric return policy does not currently apply to Kérastase & Shu Uemura purchases. Kérastase & Shu Uemura do not accept returns.

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Rated 5 out of 5 by from Nice smell and clean feel This has a very nice smell, lathers well and leave my hair feeling clean without feeling too heavy or too stripped either. It's a nice base for the whole system (conditioner, spray, etc)
Date published: 2026-03-20
Rated 4 out of 5 by from Good product This product has a delightful smell. Overall, I think for the right person it would work. But specifically on my hair, I felt it wasn’t clean enough even after two shampoos. I did try it on several of my clients and they really enjoyed it. So like I said, it would work on the right person.
Date published: 2026-03-19
Rated 4 out of 5 by from Good shampoo, meant as part of a system Its basically a gentle clarifying shampoo. It is meant to clarify and also hydrate the scalp. The scent of it is very similar to the other acidic bonding lines, lightly citrus. It lathers well, my hair feels clean after. Nothing too revolutionary happening here, but according to redken the entire line is designed to work towards scalp health and hair strength. This specific product is targeting the health and hydration of your scalp, love that it has azaliac acid (basically like skin care for your scalp)
Date published: 2026-03-19
Rated 4 out of 5 by from Good shampoo Lathers well. Left my hair clean without weighing it down.
Date published: 2026-03-17
Rated 4 out of 5 by from Love Acidic Bonding I love regular acidic bonding shampoo so I was really excited to try this out. Like the original, I love how it hydrates hair without feeling too heavy. Smells wonderful and love the lather. It’s too early to tell whether it helps with hair growth but I’m hopeful!
Date published: 2026-03-16
Rated 4 out of 5 by from Great shampoo Great quality shampoo. shampoo works best when paired with the matching conditioner otherwise I feel like it is still a great shampoo but if you use it alone I don't think that there's anything too special about it compared with the conditioner I think it works wonderful.
Date published: 2026-03-16
Rated 3 out of 5 by from Just okay. I received this product as a tester and here’s my honest review. Smells great and lathers well. I did find it left a light filmy feeling in my hair, even before conditioner.
Date published: 2026-03-16
Rated 5 out of 5 by from Love I really love this shampoo. Hair feels so clean and not dry out after use!
Date published: 2026-03-16
Rated 4 out of 5 by from Clean product Very clean products nice lather little goes a long way
Date published: 2026-03-16
Rated 5 out of 5 by from Immediate result I got the system for my client who had hair loss due to extreme weight loss. Within the first use, she reported hair felt and looked fuller.
Date published: 2026-03-16
Rated 4 out of 5 by from good It’s pretty good made my hair seem fuller. I have very thin hair so it was some help
Date published: 2026-03-14
Rated 5 out of 5 by from Love this line I received this product for free for my honest review I love this shampoo and the whole line. My fine hair has never looked better!! This shampoo leave my hair feeling full, shiny and beautiful.
Date published: 2026-03-14
Rated 1 out of 5 by from Disappointed I was very disappointed in this product. I didn’t feel like it did anything for my very fine thin hair.
Date published: 2026-03-14
Rated 4 out of 5 by from Nice shampoo Really loved the lather and the smell. Made my hair feel clean afterwards. I believe with the rest of the system it really did make a difference in the density.
Date published: 2026-03-13
Rated 3 out of 5 by from Great smell and lather but hair didnt feel great after.
Date published: 2026-03-13
Rated 5 out of 5 by from Great volume building shampoo! This shampoo is very dense, meaning a little goes a long way. Had amazing lather and wonderful clean, subtle scent. Absolutely leaves the scalp and hair feeling very clean and nice. I noticed nice volume as the shampoo did not leave the hair feeling heavy in any way.
Date published: 2026-03-13
Rated 5 out of 5 by from Love I haven’t used this long enough to know the long term benefits but I love it so far!
Date published: 2026-03-13
Rated 5 out of 5 by from Acidic Grow Full System Densifying Shampoo I have fine, hair that always feels flat the roots no matter what I do. I first tried this shampoo on its own to see how it would do. Funny enough,I actually had volume at the roots just by leaving it to dry on its own. So the following wash day I decided to do the full system and then actually dry my hair like I normally would. I had a good amount of volume that my hair had never seen before. I am impressed with this line. It is my new favorite. I like everything about it!!!
Date published: 2026-03-12
Rated 3 out of 5 by from Not my favorite The shampoo lathered really well and had a great scent but it made my hair very dry and tangled
Date published: 2026-03-12
Rated 5 out of 5 by from Love this whole line! This whole line of acidic grow system is fantastic! It leaves the hair feeling super clean and the smell is great. I did notice that my hair felt more dense after using. I recommend this to many of my clients now.
Date published: 2026-03-12
Rated 5 out of 5 by from I like it I like the shampoo. It does help with adding body and moisture to weighted down hair, leaves my scalp feeling clean and refreshed.
Date published: 2026-03-12
Rated 5 out of 5 by from So far so good So far so good. Still a little early for a certain opinion to form but it’s a nice shampoo. Especially for fine or thin hair.
Date published: 2026-03-11
Rated 5 out of 5 by from Great products for rebuilding hair I’ve been dying to try this, I had some major surgeries that made my hair thin and broken. After using this system for a few weeks, I’ve already seen a difference, my hair feels and looks thicker and my curls are springier. I’m looking forward to the results after I use it for 6 months. I highly recommend!
Date published: 2026-03-11
Rated 5 out of 5 by from Love it!! I love this whole line of acidic grow system. Smell is clean not perfumy. My hair feel clean with feeling stripped. Lathers up in the first wash. You don't need a lot to make it feel clean. I would definitely recommend this shampoo. My hair totally felt more dense when I used the whole system. I would highly recommend.
Date published: 2026-03-11
Rated 4 out of 5 by from Thicker hair This whole line is unique in color, smell and use. I only used it about 1 week before writing this review and found my hair felt a lot thicker. The smell was almost a manly smell, but was quite nice. The color of the bottles make them stand out and are very pretty.
Date published: 2026-03-11
Rated 4 out of 5 by from Works needs a little hydration The smell of this shampoo is amazing. It's light but feminine. The shampoo lathers well and left my hair and scalp feeling clean. On my own color-treated hair I did find it to not be moisturizing enough. It did deliver volume to my hair.
Date published: 2026-03-11
Rated 4 out of 5 by from Clean and volumized I love Redken products! This had a great texture and made hair feel both clean and full without weighing it down. Such a great shampoo to try if you’re wanting to add some volume to your hair. Thanks Redken for the free product in exchange for a review!
Date published: 2026-03-11
Rated 4 out of 5 by from Great Shampoo This is my first time using this product- My hair feels fuller after using the shampoo. It leaves my hair feeling shiny and the smell is subtle. I would definitely recommend if you have hair that is thinning.
Date published: 2026-03-11
Rated 4 out of 5 by from Nice Shampoo I was super excited to receive this product line because I had one specific client in mind when it arrived. She is suffering from some situational alopecia due to anesthesia. The shampoo consistency is great, I love the clear product and the smell is amazing. It lathered very well. Obviously the whole line needs to be used for effectiveness.
Date published: 2026-03-11
Rated 4 out of 5 by from Wonderful I have fine thin hair. Fluffed me right up. I used the whole set together. Best results. Long lasting.
Date published: 2026-03-10
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