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Free Gift with Replenish & Save purchase
Online only free One United mini with initial replenish & save Redken purchase (valid thru 1.30.27 on initial replenish & save shipped orders only; pickup and same-day delivery not eligible. While quantities last)
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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, soothe, and hydrate your scalp.
Item 2653066
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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FAQs
What is the Acidic Grow Shampoo?
It is a gentle cleanser designed to purify the scalp and promote a healthy environment for thicker, fuller hair.
How do I use this shampoo?
Apply to wet hair, massage into the scalp to create a lather, and rinse thoroughly. Follow with conditioner.
Is it safe for color treated hair?
Yes, the gentle, acidic formula is safe for color treated hair and helps maintain vibrancy.
What are the benefits?
It removes buildup and rebalances the scalp, which is essential for healthy hair growth, while also providing root lift.
Can I use it daily?
Yes, it is gentle enough for daily use to maintain optimal scalp health.
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...
264 results
No densifying here
As someone being on a GLP1 with PCOS suffering with hair loss and shedding is something I am always looking to correct. I thought this was going to be my saving grace, at first I felt my hair was thicker and had more volume. (I have fine straight hair) Recently I have noticed so much more shedding in the shower than normal and around my house which I never noticed before. I wash every other day or when my hair needs it and this was the only new product I tried along side the conditioner. I wanted to love this but she needs to go so I can save my hair
To drying
Didn't seem to clean my hair at all. Was very drying and didn't spread easily. Made my hair oily in the back when I used it. Didnt seem to help with growth. I didn't finish using it because I didn't like it. It was a nice sized bottle though. Has a strong alcoholic smell. You have to use a lot to feel like it really cleans the hair.
Redken acidic grow
Awful shampoo and conditioner. Left my hair so dry. Beware.
I would buy this product again
Amazing for hair thinning
Scalp balance and density
Usually Redken shampoos are heavy for my fine hair but this one wasn't. Abbey Yung talked about this for scalp care and it's amazing and deep cleansing without stripping my scalp. I don't think this is a shampoo on a daily base as it cleanse pretty well. Its on my top 5 shampoos for scalp care benefits and density compared to Dr. Groot one. The ingredients for scalp care are great. I have not try the conditioner though but will soon. This year I have been trying to take care of my scalp more.