Redken
Acidic Grow Full System Scalp & Hair Serum

Acidic Grow Full System Scalp & Hair Serum is rated 4.3 out of 5 by 119.
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Acidic Grow Full System Scalp & Hair Serum
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3.4 oz.
#E4538600
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What It Is

Redken Acidic Grow Full System Scalp & Hair Serum is a lightweight and formulated with azelaic acid and a 5% strength complex of Caffeine + Prebiotics to rebalance the scalp with moisture, promotingvisibly healthy-looking hair.

What It Does

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

• Scalp is instantly blanced out with moisture

• Delivers instant root-lift for volume

• Provides 2x stronger hair**

• Lightweight and fast-absorbing, non greasy formula and finish

 

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

**with system of shampoo + conditioner + serum + spray

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

Spray half an inch away from the scalp on clean, damp hair. Massage into scalp.

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

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 Less breakage!!! I really, really, really like this scalp/hair serum! I have very processed fine hair that breaks easily and I need all the help I can get to support new growth. I’ve been using this about a week now and there is much less breakage on my comb even within that short time. I do recommend using the whole line as I am, the products all complement each other and are meant to work together. The smell is refreshing and light. I def recommend if you need help with growth.
Date published: 2026-03-03
Rated 5 out of 5 by from Excited for results I am excited to see the long term effects of this product and see whether or not it really helps with hair growth and density. Smell is good and does not leave hair, greasy or weighed down.
Date published: 2026-03-03
Rated 5 out of 5 by from Great! I’m enjoying this product! I don’t feel any buildup on my hair when styling. Hoping with continue use, I’ll see the effects of hair growth.
Date published: 2026-03-02
Rated 5 out of 5 by from Overall great product I received this entire line for free in exchange for my review and I will definitely continue to use it. My hair feels very silky and smooth. This serum is very light weight I don’t fell it at all after I blow dry my hair. I’m Hoping with longer use term use it will help my fine hair grow longer.
Date published: 2026-03-02
Rated 3 out of 5 by from I love the shampoo and conditioner so much, but I’m not actually sure what this serum does. I don’t notice a difference using it. I love the smell though
Date published: 2026-03-02
Rated 3 out of 5 by from Meh This product is just average to me. I really hate the smell and I hate the buildup that it leaves on the hair after it's dry
Date published: 2026-03-01
Rated 3 out of 5 by from Best for short hair Hair felt stiff after shampooing. Scent was light.
Date published: 2026-03-01
  • y_2026, m_6, d_5, h_14
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  • co_hasreviews, tv_14, tr_105
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  • reviews, product