Redken
Acidic Grow Full System Densifying Shampoo

Acidic Grow Full System Densifying Shampoo is rated 4.4 out of 5 by 110.
  • y_2026, m_7, d_4, h_14
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.46
  • cp_2, bvpage2n
  • co_hasreviews, tv_14, tr_96
  • loc_en_US, sid_redken-acidic-grow-full-system-densifying-shampoo, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_saloncentric
  • bvseo_sdk, dw_cartridge, 17.1.0, p_sdk_3.2.0
  • CLOUD, getAggregateRating, 47ms
  • reviews, product
Acidic Grow Full System Densifying Shampoo
Preview image 1 of Acidic Grow Full System Densifying Shampoo
Preview image 2 of Acidic Grow Full System Densifying Shampoo
Preview image 3 of Acidic Grow Full System Densifying Shampoo
Preview image 4 of Acidic Grow Full System Densifying Shampoo
Preview image 5 of Acidic Grow Full System Densifying Shampoo
Preview image 6 of Acidic Grow Full System Densifying Shampoo
Preview image 7 of Acidic Grow Full System Densifying Shampoo
Preview image 8 of Acidic Grow Full System Densifying Shampoo
watch the product video
Select Size
Available options to select
10.1 oz.
#P2795000
Auto Replenish:
FREE SHIPPING OVER $50 & EARN 100 PROREWARDS POINTS
  • Choose your frequency. Skip or cancel anytime.
  • Free shipping over $50* & 100 ProRewards Points++ on all recurring orders.
  • Select auto-delivery in cart.
  • Exclusions apply.
Learn More
Purchase Options
Find in-store availability
saloncentric credit card take charge Learn More

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.

Click to see more details.

Rated 4 out of 5 by from I think the smell is so amazing. Love this product really good for fine hair not too heavy! I think it’s helps with the growth of baby hairs for sure!
Date published: 2026-04-22
Rated 5 out of 5 by from LOVE! Love this shampoo! I normally wash my hair twice because I go about a week in between washes and I only need to once with this! It’s super concentrated and I always need less than I think and I’m surprised by how clean it feels after (without feeling dried out). The only thing I’m not a fan of is the smell, but that’s just me; a little too masculine. I received this product for free in exchange for my honest review.
Date published: 2026-04-17
Rated 4 out of 5 by from Smells good Smells good and does make my thin hair feel thicker. Just started using it im hoping it will help the more i use it with the growth.
Date published: 2026-04-13
Rated 2 out of 5 by from Hair felt dry and stripped after using Thank you to Redken. I received this free sample in exchange for my honest review. This clear, clean, smelling shampoo, leathers nicely however I just found it a little bit too drying hair felt stripped
Date published: 2026-04-02
Rated 1 out of 5 by from Hair fallout/Extreme Dryness I’m a hairstylist and I like to use most products on myself before using in salon. I’ve used this shampoo & conditioner for two washes. I have virgin hair and have experienced little to no shedding in my life. This shampoo has made my hair fallout at least a handful while in the shower. And extreme dryness afterwords. Do not recommend.
Date published: 2026-04-02
Rated 4 out of 5 by from Great volumizing shampoo!! Thanks to Salon Centric review crew I was able to try out this shampoo. It does a good job of cleansing the hair and making it look fuller. Although I did notice that I couldn’t identify any ingredients that stimulates hair growth. Once I really looked into it this shampoo is meant to help maintain the hair rather than have more hair grow in.
Date published: 2026-04-02
Rated 5 out of 5 by from A great product for that fine textured hair. I used this product on my daughter who has naturally fine/thin hair. But has also had surgery recently and it made her hair feel so much fuller. I can’t wait to see what it feels like over time.
Date published: 2026-03-31
Rated 5 out of 5 by from It works really well! As a girlie with fine hair, this absolutely made my hair feel thicker. Not like insanely thick, but thick enough that I did not feel bald. I received this product for free in exchange for my honest review. Even though I was gifted this product, I definitely think I will be purchasing this once I am out.
Date published: 2026-03-31
Rated 4 out of 5 by from Nice! Great cleanser and scent/ I don’t love all the ingredients. Hair does feel clean and thick I’m waiting to see an actual increase in hair growth before I can give 5 stars.
Date published: 2026-03-29
Rated 5 out of 5 by from Love it! Shamoo was used for 2 weeks to write the review. The pictures will tell the truth. Fuller hair on my costumer after 2 weeks with shampoo, conditioner, serum and spray. Love it because it does work!
Date published: 2026-03-29
Rated 5 out of 5 by from Visibly fuller Been using for about a month now and it definitely does make my hair feel a little fuller! I like the smell and it doesn't weigh my hair down. Intrigued to keep using to see how my hair will progress.
Date published: 2026-03-28
Rated 5 out of 5 by from Scalp health generates hair health Leaves hair clean and nourished. Helps create good soil in the scalp to grown new hair! Hopefully will see hair growth with continued use. I shampoo twice a week with the full treatment for reference.
Date published: 2026-03-28
Rated 5 out of 5 by from Lovely I really like the scent of this system. It’s light and airy, not too fragrant. Ive used it about 3 weeks and noticing some baby sprouts. Will need to use for a longer period of time to get a better gage on the system. Thanks to bzzagent for the product for review.
Date published: 2026-03-27
Rated 5 out of 5 by from Great shampoo I loved the fresh smelling scent and luxurious lather.Rinsed clean and actually made my thin hair feel heavier.
Date published: 2026-03-27
Rated 5 out of 5 by from Happy with the line I really like the smell, consistency and lather. I haven’t been using it long enough to know that it’s working for sure, but I like the product
Date published: 2026-03-27
Rated 5 out of 5 by from Great line!! I really love this whole line!! It has made my hair feel so much thicker and I can tell my hair is growing!! The smell isn’t my favorite it’s not a bad smell it just reminds me of shaving cream.
Date published: 2026-03-26
Rated 5 out of 5 by from Great shampoo I really like this shampoo. The smell and consistency is great and easy to work with. My clients comment on the great scent every time.
Date published: 2026-03-26
Rated 5 out of 5 by from Great product I love the consistency of this product. Its very light and it gives a really nice lather. I can definitely feel a difference in my scalp and hair density after the use.
Date published: 2026-03-26
Rated 4 out of 5 by from Happy I tried as a glp-1 user I received this product complimentary in exchange for an honest review. I have been experiencing hair fall (not breakage) from using a glp-1 medication. My hair type is usually thick and coarse but has thinned significantly. I was so surprised by this shampoo. It did not make my hair feel weighed down or greasy. I feel like the hair fall I was experiencing was already tapering off after three months of significant shed but the acidic grow full really gave my hair an oomph it needed. I enjoy the clean, fresh scent. My scalp feels clean and hydrated and my hair feels clean but I have more volume. So excited about this new line.
Date published: 2026-03-26
Rated 5 out of 5 by from Works and smells great Smells great and leaves hair feeling full. Doesn't dry the hair and doesn't leave hair oily.
Date published: 2026-03-26
Rated 4 out of 5 by from Worth a try After a few uses, I have noticed my hair appearing a little fuller. It is usually flat on wash day, but the next day has more volume. The smell is light and refreshing.
Date published: 2026-03-24
Rated 5 out of 5 by from Need I love how clean fresh smell it carries through out the day I love how strong it has the hair strands the fall out and the health of my scalp have been great and fallout has been minimal
Date published: 2026-03-24
Rated 4 out of 5 by from Stronger, softer hair This shampoo gives you the perfect balance of cleanse and care. It removes buildup without stripping the hair, while supporting a healthier scalp environment for growth. Hair feels stronger, softer, and noticeably more resilient after just a few washes. Ideal for anyone experiencing shedding or breakage.
Date published: 2026-03-24
Rated 5 out of 5 by from Big Hair for Skinny Hair peeps I received the Acidic Grow Full System in exchange For my honest review. It has completely changed my fine, flat hair. I have seen it work wonders on clients who are begging for weightless volume from roots to ends. This product delivers fuller hair that has shine and looks healthy and smells fresh.
Date published: 2026-03-23
Rated 5 out of 5 by from Awesome system I’ve really enjoyed using the Acidic Grow Full System. I have used this product for close to two months now. Even from the first few uses, I have noticed my hair feels stronger and healthier. All the products have left my hair feeling soft and not heavily weighed down. I would highly recommend this full system to clients wanting to repair, strengthen, and grow their hair.
Date published: 2026-03-23
Rated 5 out of 5 by from I’ve really enjoyed using the Acidic Grow Full System so far. From the first few uses, I noticed the hair felt stronger, healthier, and had a visibly fuller appearance. The shampoo and conditioner leave the hair soft without weighing it down, and the serum + densifying spray are lightweight but still effective. My clients have also responded really well to it — especially those concerned with thinning or breakage. I’ve noticed improved manageability and a smoother overall finish when styling. The only thing I would note is that I wish I had a bit more time to fully evaluate the long-term growth and density results. However, based on my experience so far, I’m very impressed and excited to continue using it behind the chair. Overall, this system is a great option for clients looking to support healthier, fuller-looking hair while reducing breakage.
Date published: 2026-03-22
Rated 5 out of 5 by from Delivers great results This is the stuff! Never have i used a volume shampoo that didnt leave my hair feeling dry and brittle. I get lift, softness and shine. Huge plus is my hair doesn’t get oily the next day and I am able to go a few days between washes.
Date published: 2026-03-22
Rated 5 out of 5 by from Always recommend! I love this line of hair products, my hair was falling out so bad. I knew it was time to get me some! I can always depend on redken, I always recommend and use it again and again!!
Date published: 2026-03-21
Rated 5 out of 5 by from Love Smells amazing. Works great standalone or with the rest of the line. Clients had noticeable difference in the perceived density of their hair.
Date published: 2026-03-21
Rated 3 out of 5 by from not the best from redken I’ve been using redken for several years, and normally I love their products. I try to test things on myself before on my clients. Normally I can wash my hair every 4-5 days, sometimes more and not look super oily. I’ve been having to wash my hair more often with this line, every 2-3 days. I rinse my hair in cold water too, haven’t had any product in my hair. And I was using clean pillowcases. This is honestly gonna be a no for me. I like how it smells, and my hair does feel clean afterwards, and healthy. But I shouldn’t be washing my hair that often, it usually takes at least 4 days for my scalp to feel oily.
Date published: 2026-03-20
  • y_2026, m_7, d_4, h_14
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.46
  • cp_2, bvpage2n
  • co_hasreviews, tv_14, tr_96
  • loc_en_US, sid_redken-acidic-grow-full-system-densifying-shampoo, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_saloncentric
  • bvseo_sdk, dw_cartridge, 17.1.0, p_sdk_3.2.0
  • CLOUD, getReviews, 8ms
  • reviews, product