User images

Reviews & comments

Rating: 3.9Based on 138 reviews
  • Most helpful positive

    Madeléne

    The post was made 1 week
    Rating: 5 out of 5

    Love it!

    I’m so happy I got the chance to try this whole new series because I love it! I’ve been testing it for 2 weeks now and already notice that my hair looks fuller, healthier, feels stronger, and doesn’t shed as much anymore. It smells nice and fresh with a citrusy and slightly masculine scent! The spray for the lengths is easy to apply and should be sprayed from about 15 cm away and combed through from the middle of the hair down to the ends. The hair becomes soft, light, airy, and looks much fresher and shinier after using it after every wash. So for me, this series fits perfectly and I warmly recommend it. The review was conducted on behalf of Smartson – the tester got to try the product for free.
    147 views
  • Most helpful negative

    Malin

    The post was made 6 days
    Rating: 2 out of 5

    Hair feels more damaged than full

    I have tested Redken Acidic Grow Full System Instant Densifying Spray for Thin Hair for almost a month, and I’m not quite sure what I think about the product. It smells nice, and I spray it in my hair (when it’s towel-dry). It’s easy to brush the product through the hair, but once dry, the hair becomes very stiff and feels almost more damaged than “voluminous.” However, I haven’t tested enough to maybe find the right amount, etc., to both achieve volume/full hair – while also making it look rich and thick. The price feels a bit high for the product. The review was conducted on behalf of Smartson – the tester received the product for free.
    148 views

  • Emma

    The post was made 20 hours
    Rating: 2 out of 5

    Not for me

    - Despite 2 weeks of use, I unfortunately see no difference in volume or fullness. - Hair feels stiff and a bit dry after blow-drying. - Smells citrusy, which doesn't suit me. Reminds me a bit of cleaning products. - Does not weigh hair down, which is good. The product is very "light". - The spray bottle is good and the product is easy to distribute in the hair. The review was conducted on behalf of Smartson – the tester got to try the product for free.
    3 views

  • Maria

    The post was made 1 day
    Rating: 5 out of 5

    Lots of volume and shine

    I think this product lives up to what it promises. The product gives me more volume and beautiful shine in my hair, which can otherwise be quite flat. It is easy to apply and has a fresh scent, just like the rest of the series. The review was carried out on behalf of Smartson – the test pilot tried the product for free.
    7 views

  • Sofie

    The post was made 1 day
    Rating: 4 out of 5

    Matte and Fuller Result

    Satisfied with this product. Used on towel-dried hair, sprayed and then brushed through. Then blow-dry the hair and feel that the hair becomes matt and a bit fuller. The mattness makes the hair not feel greasy as quickly. However, I can experience that if you spray too much, it doesn't spread properly and may leave a film that makes it feel dirty a bit faster. The review was conducted on behalf of Smartson – the tester got to try the product for free.
    36 views

  • Josefin

    The post was made 1 day
    Rating: 2 out of 5

    Simple product

    I have been testing this spray for almost 3 weeks. I have fine Nordic hair and have not noticed that the hair feels fuller yet. But maybe it requires a longer period of use. The product is super easy to spray into towel-dried hair and comb out. Unfortunately, the hair feels a bit "stiff" when air-dried. Then the hair feels greasy after a day or a few days. I think the product is unnecessarily expensive and unfortunately will not buy it again. The review was made on behalf of Smartson – the tester has tried the product for free.
    7 views

  • Christina

    The post was made 1 day
    Rating: 2 out of 5

    Not a product for my hair

    I have tested the series' leave-in treatment spray together with the other products in the series, and unfortunately, I was even more disappointed here. The product is supposed to give a light and airy feeling, but I experience quite the opposite. My thin hair feels heavier, and it is clearly noticeable that I have product in my hair, which I do not appreciate. Maybe it works better on other hair types, but this particular series is aimed at fine hair, so the expectations were higher. The positive is that it is easy to apply and convenient to use in the routine. Unfortunately, that is not enough, and my rating lands at 2/5. The review was carried out on behalf of Smartson – the test pilot tried the product for free.
    5 views

  • Irene

    The post was made 1 day
    Rating: 5 out of 5

    Nice product for thin hair

    I have tested the serum as part of my hair care routine for two weeks together with other products in the series. It is easy to apply to the hair and has a light consistency that does not weigh the hair down. Something I really appreciate with my thin hair. The review was conducted on behalf of Smartson – the tester got to try the product for free.
    5 views

  • Anonym

    The post was made 2 days
    Rating: 1 out of 5

    Irritates airways and lungs

    In collaboration with Smartson, I have been able to try the Redken Acidic Grow Full System series with shampoo, conditioner, serum, and spray for 2 weeks free of charge. After the first wash, my hair felt very rough and hard. It got somewhat better after the second wash but was still rougher than usual. I feel that my hair became flatter and less voluminous than before I started the test. An unpleasant thing I have never experienced before was that when rinsing out the hair, vapors were created in the shower that I inhaled, and it irritated my airways and lungs. It felt corrosive, and I had coughing fits with every shampoo. It doesn't seem very healthy. The products together cost about 1800 SEK. I would recommend spending that money on something else.
    54 views

  • Hilde

    The post was made 2 days
    Rating: 3 out of 5

    A good leave-in for thin hair

    It took a few tries before I understood how to use this, as I initially used it like the serum. I have used it every time together with the serum, and I regret that a bit, because it becomes harder to tell what does what to the hair. I have long, straight & thin hair. The first time I used the product, I sprayed it on the scalp, and the hair felt stiff, without actually looking that way. When I brushed my hair properly, the stiffness disappeared, and the hair felt fuller. I haven’t had time to test it over a long period yet, but so far I like it. I think the hair becomes easier to brush after the product is applied to damp hair. At the same time, I find it harder to run my fingers through the hair after using this product (when it’s dry), because then the fingers get stuck in a way, a bit tangled/matted. I think the spray is very concentrated, so there’s a lot of product in one area if I don’t move the bottle while spraying, so I wish it was more like a gas spray. I like the product more and more, so I will continue to use it. However, I think the price is too high for me to buy it right away when it runs out. The review was conducted on behalf of Smartson – the tester received the product for free.
    44 views

  • Benten

    The post was made 2 days
    Rating: 4 out of 5

    Good spray

    Have used it for about two weeks along with the rest of the series. Haven't noticed much volume since I already have quite a bit of volume in my hair. Feels like it weighs the hair down a bit, which I like because my hair is curly and with the spray it keeps the curls more defined. The review was conducted on behalf of Smartson – the tester received the product for free
    7 views

  • Anam Naeem

    The post was made 2 days
    Rating: 3 out of 5

    Unsure

    Good scent, hair doesn't get sticky. But the only downside is that the hair gets greasy quite quickly and it looks like you just came out of the shower and look "wet". So it doesn't suit me. The review was conducted on behalf of Smartson – the tester received the product for free.
    37 views

RedkenAcidic Grow Full SystemInstant Densifying Spray for Thin Hair 190 ml

464 kr
Free delivery option available, can be sent immediately

From the brand that masters advanced pH science, Acidic Grow Full System Instant Densifying Spray for fuller and thicker hair, enriched with azelaic acid.

A lightweight leave-in treatment spray that immediately provides body, volume, and root lift to the hair.
Suitable for all hair types, providing the hair with added volume.

Immediately after using:
• +17% instant volume*.
• Product easily absorbs into hair.
• Hair has body/volume.
• Hair looks full, smooth, soft, and healthy.
• Hair feels smooth & soft.
• Hair is manageable and easy to style.
• Hair is not greasy, nor weighed down.

*Instrumental test with shampoo and spray


How to Use:

Spray 15 cm away from hair, on clean, damp hair. Comb through from mid-sections to ends.

190 ml

Recommended products

Customer service