Redken
Acidic Grow Full System Densifying Shampoo

Acidic Grow Full System Densifying Shampoo is rated 4.5 out of 5 by 93.

Preview image 1 of Acidic Grow Full System Densifying Shampoo

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10.1 oz.

#P2795000

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

How To

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

Return & Refund Policy

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.

Ratings & Reviews

Rated 2 out of 5 by SassyIrish777 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 BedHead 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 Natalie 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 Heather86 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 kasssss 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 Pessica 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 Shorty 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 Haley 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