
Product Overview This leave-in treatment works to refresh and protect the scalp to give each hair strand a fuller appearance. Formulated for coloured hair with progressed thinning, the Scalp Access 2.0 technology helps combat hair loss caused by breakage, providing a healthier scalp environment. This treatment is the final step in a 3-part system designed to amplify hair structure. Directions for Use Shake well and apply to your whole scalp. Do not rinse.
Product Overview This leave-in treatment works to refresh and protect the scalp to give each hair strand a fuller appearance. Formulated for coloured hair with progressed thinning, the Scalp Access 2.0 technology helps combat hair loss caused by breakage, providing a healthier scalp environment. This treatment is the final step in a 3-part system designed to amplify hair structure. Directions for Use Shake well and apply to your whole scalp. Do not rinse.
in 3 offers
The lowest price for Nioxin System 4 Scalp & Hair Treatment 100ml right now is $29.95 at Alumer Beauty, compared across 3 retailers.
The all-time low was $20.00 on 31 Dec 2025 — today's price is 50% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 4 June 2026.
Nioxin System 4 Scalp & Hair Treatment 100ml
Product Overview This leave-in treatment works to refresh and protect the scalp to give each hair strand a fuller appearance. Formulated for coloured hair with progressed thinning, the Scalp Access 2.0 technology helps combat hair loss caused by breakage, providing a healthier scalp environment. This treatment is the final step in a 3-part system designed to amplify hair structure. Directions for Use Shake well and apply to your whole scalp. Do not rinse.
Product Overview This leave-in treatment works to refresh and protect the scalp to give each hair strand a fuller appearance. Formulated for coloured hair with progressed thinning, the Scalp Access 2.0 technology helps combat hair loss caused by breakage, providing a healthier scalp environment. This treatment is the final step in a 3-part system designed to amplify hair structure. Directions for Use Shake well and apply to your whole scalp. Do not rinse.
Last updated at 04/06/2026 18:08:39
NIOXIN System 4 Scalp & Hair Treatment 100ml, For Coloured Hair with Progressed Thinning
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Nioxin System 4 Scalp & Hair Treatment 100ml
Delivery $8.95
NIOXIN Scalp And Hair Treatment System 4 | 100ml
originally posted on influenster.com
As a female who only washes my hair once a week it’s hard for me to say as of now if this is making significant changes to my hair. This is something that I would need to try for months to really know, but I’m out of time for this review. The shampoo has the cooling/minty feeling which I like but does make the hair feel pretty dry. The conditioner says “scalp treatment†so I concentrate in on my scalp area and apply a different condition to my ends. Even when I’ve applied the conditioner all over my hair it still felt dry so I have always used a more moisturizing conditioner on my ends. The leave in spray does make my hair feel thicker after I blow dry it but if you apply too much you hair will feel dirty so use sparingly. Your head will feel minty for ... MoreAs a female who only washes my hair once a week it’s hard for me to say as of now if this is making significant changes to my hair. This is something that I would need to try for months to really know, but I’m out of time for this review. The shampoo has the cooling/minty feeling which I like but does make the hair feel pretty dry. The conditioner says “scalp treatment†so I concentrate in on my scalp area and apply a different condition to my ends. Even when I’ve applied the conditioner all over my hair it still felt dry so I have always used a more moisturizing conditioner on my ends. The leave in spray does make my hair feel thicker after I blow dry it but if you apply too much you hair will feel dirty so use sparingly. Your head will feel minty for hours after using the whole system. Overall I do think my hair feels thicker after using the system but only for that day. The next day or if I wash with something else my hair feels the same. I will keep using it though.
originally posted on influenster.com
I received this product for free from Nixon and Influenster in exchange for my honest review. So I will say I do not know how I ended up trying the kit for thinning hair because I do have extra thick hair but I did go ahead and try out the kit so here are my thoughts on the leave in treatment. I believe this did give some volume to my hair which would be great for thinning hair. However I felt like it left my hair very brittle and it was very drying to my hair. It created tangles where there was not any. I ended up using part of my normal after shower products to make it through just to help it feel not so damaged. I also let my hair air dry afterwards as well. I will not be using this again on my hair. I do hope it helps with those with thinning hair however I ... MoreI received this product for free from Nixon and Influenster in exchange for my honest review. So I will say I do not know how I ended up trying the kit for thinning hair because I do have extra thick hair but I did go ahead and try out the kit so here are my thoughts on the leave in treatment. I believe this did give some volume to my hair which would be great for thinning hair. However I felt like it left my hair very brittle and it was very drying to my hair. It created tangles where there was not any. I ended up using part of my normal after shower products to make it through just to help it feel not so damaged. I also let my hair air dry afterwards as well. I will not be using this again on my hair. I do hope it helps with those with thinning hair however I would definitely use caution.
originally posted on influenster.com
smells wonderful there is no medicated smell to it but once you use it you can feel medication treating not only your hair but your scalp. I've had really bad dandruff that I have been fighting for the last year and finally found something that treated it nearly instantly. within 2 days it was gone. my hair is voluminous but also thin. meaning I have a looot of hair but it is not what I would call healthy thick locks. more like frail strands that are continually getting split ends even shortly after a trim. I have been using this whole kit the shampoo, condition er and scalp treatment for about 2 weeks now and I actually am really surprised and will definitely buy this. this time it was sent to me free of charge for my honest review and to be honest I don't see a ... Moresmells wonderful there is no medicated smell to it but once you use it you can feel medication treating not only your hair but your scalp. I've had really bad dandruff that I have been fighting for the last year and finally found something that treated it nearly instantly. within 2 days it was gone. my hair is voluminous but also thin. meaning I have a looot of hair but it is not what I would call healthy thick locks. more like frail strands that are continually getting split ends even shortly after a trim. I have been using this whole kit the shampoo, condition er and scalp treatment for about 2 weeks now and I actually am really surprised and will definitely buy this. this time it was sent to me free of charge for my honest review and to be honest I don't see a downside at all. my hair is looking more alive then it has in a long time I received this product complimentary for review purposes.
| Product dimensions | 8 x 5 x 12 cm; 130 Grams |
| Hair type | Color Treated, Thin |
| Scent | Unscented |
| Liquid volume | 100 Millilitres |
| Unit count | 100 millilitre |
NIOXIN System 4 Scalp & Hair Treatment 100ml, For Coloured Hair with Progressed Thinning
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Nioxin System 4 Scalp & Hair Treatment 100ml
Delivery $8.95
NIOXIN Scalp And Hair Treatment System 4 | 100ml
As a female who only washes my hair once a week it’s hard for me to say as of now if this is making significant changes to my hair. This is something that I would need to try for months to really know, but I’m out of time for this review. The shampoo has the cooling/minty feeling which I like but does make the hair feel pretty dry. The conditioner says “scalp treatment†so I concentrate in on my scalp area and apply a different condition to my ends. Even when I’ve applied the conditioner all over my hair it still felt dry so I have always used a more moisturizing conditioner on my ends. The leave in spray does make my hair feel thicker after I blow dry it but if you apply too much you hair will feel dirty so use sparingly. Your head will feel minty for ... MoreAs a female who only washes my hair once a week it’s hard for me to say as of now if this is making significant changes to my hair. This is something that I would need to try for months to really know, but I’m out of time for this review. The shampoo has the cooling/minty feeling which I like but does make the hair feel pretty dry. The conditioner says “scalp treatment†so I concentrate in on my scalp area and apply a different condition to my ends. Even when I’ve applied the conditioner all over my hair it still felt dry so I have always used a more moisturizing conditioner on my ends. The leave in spray does make my hair feel thicker after I blow dry it but if you apply too much you hair will feel dirty so use sparingly. Your head will feel minty for hours after using the whole system. Overall I do think my hair feels thicker after using the system but only for that day. The next day or if I wash with something else my hair feels the same. I will keep using it though.
I received this product for free from Nixon and Influenster in exchange for my honest review. So I will say I do not know how I ended up trying the kit for thinning hair because I do have extra thick hair but I did go ahead and try out the kit so here are my thoughts on the leave in treatment. I believe this did give some volume to my hair which would be great for thinning hair. However I felt like it left my hair very brittle and it was very drying to my hair. It created tangles where there was not any. I ended up using part of my normal after shower products to make it through just to help it feel not so damaged. I also let my hair air dry afterwards as well. I will not be using this again on my hair. I do hope it helps with those with thinning hair however I ... MoreI received this product for free from Nixon and Influenster in exchange for my honest review. So I will say I do not know how I ended up trying the kit for thinning hair because I do have extra thick hair but I did go ahead and try out the kit so here are my thoughts on the leave in treatment. I believe this did give some volume to my hair which would be great for thinning hair. However I felt like it left my hair very brittle and it was very drying to my hair. It created tangles where there was not any. I ended up using part of my normal after shower products to make it through just to help it feel not so damaged. I also let my hair air dry afterwards as well. I will not be using this again on my hair. I do hope it helps with those with thinning hair however I would definitely use caution.
smells wonderful there is no medicated smell to it but once you use it you can feel medication treating not only your hair but your scalp. I've had really bad dandruff that I have been fighting for the last year and finally found something that treated it nearly instantly. within 2 days it was gone. my hair is voluminous but also thin. meaning I have a looot of hair but it is not what I would call healthy thick locks. more like frail strands that are continually getting split ends even shortly after a trim. I have been using this whole kit the shampoo, condition er and scalp treatment for about 2 weeks now and I actually am really surprised and will definitely buy this. this time it was sent to me free of charge for my honest review and to be honest I don't see a ... Moresmells wonderful there is no medicated smell to it but once you use it you can feel medication treating not only your hair but your scalp. I've had really bad dandruff that I have been fighting for the last year and finally found something that treated it nearly instantly. within 2 days it was gone. my hair is voluminous but also thin. meaning I have a looot of hair but it is not what I would call healthy thick locks. more like frail strands that are continually getting split ends even shortly after a trim. I have been using this whole kit the shampoo, condition er and scalp treatment for about 2 weeks now and I actually am really surprised and will definitely buy this. this time it was sent to me free of charge for my honest review and to be honest I don't see a downside at all. my hair is looking more alive then it has in a long time I received this product complimentary for review purposes.
Scalp and Hair Treatment - (for natural hair and light thinning). The content comes out of a pump and feels like a serum but doesn't make your hands oily. You can pump it directly onto your scalp and then massage it in. It has a strong peppermint scent which was refreshing to me. • Along with the shampoo and conditioner pairing, this did its job and helped my hair grow 2x faster than it did prior to using the 3 step treatment. It also thickened my hair making it stronger and healthier in appearance. • I have been using this for over 3 months, 2-3 times a week and there is still a lot of product left in the 3.38 FL oz bottle. • See pictures for before and after. You will see my very noticeable scalp in one of the pictures vs, my healthier scalp and hair in the other ... MoreScalp and Hair Treatment - (for natural hair and light thinning). The content comes out of a pump and feels like a serum but doesn't make your hands oily. You can pump it directly onto your scalp and then massage it in. It has a strong peppermint scent which was refreshing to me. • Along with the shampoo and conditioner pairing, this did its job and helped my hair grow 2x faster than it did prior to using the 3 step treatment. It also thickened my hair making it stronger and healthier in appearance. • I have been using this for over 3 months, 2-3 times a week and there is still a lot of product left in the 3.38 FL oz bottle. • See pictures for before and after. You will see my very noticeable scalp in one of the pictures vs, my healthier scalp and hair in the other (taken after first use and latest use). Pros- I think the review says it all! Cons- depending on seller it could be pricey, BUT it is worth the price! Note: I didn't see any progress until 1 month in. Don't expect to see results in the first few weeks. ✔️Highly recommended
I had gastric bypass and I have lost a serious amount of hair. I was advised by my dermatologist to try Nioxin, and was excited to try it. I have to say that I noticed within a couple days that I stopped losing so much hair and now I am only losing a normal amount due to showering and styling. I enjoy the light minty sent and it leaves my hair soft and healthy looking. I also have noticed two weeks after starting Nioxin that my hair looks like it is thicker to the point a friend asked what I was doing to my hair to make it thicker. I think this has alot to do with using all 3 products shampoo, conditioner, and the scalp and hair treatment together. I feel that the scalp and hair treatment really adds a thickness to my hair while leaving it soft and manageable to ... MoreI had gastric bypass and I have lost a serious amount of hair. I was advised by my dermatologist to try Nioxin, and was excited to try it. I have to say that I noticed within a couple days that I stopped losing so much hair and now I am only losing a normal amount due to showering and styling. I enjoy the light minty sent and it leaves my hair soft and healthy looking. I also have noticed two weeks after starting Nioxin that my hair looks like it is thicker to the point a friend asked what I was doing to my hair to make it thicker. I think this has alot to do with using all 3 products shampoo, conditioner, and the scalp and hair treatment together. I feel that the scalp and hair treatment really adds a thickness to my hair while leaving it soft and manageable to style. I would advise anyone with thinning hair to try this product.
I have loved this product! I must say, I have only used this conditioner along with the whole system (shampoo, conditioner, treatment), but I LOVE it as a system. I really feel like the scalp and hair treatment is really the secret sauce of the system. I enjoyed the fresh, menthol minty smell and refreshing cooling feeling on my scalp! I did notice some scalp redness after using the treatment, but it sounds like that can be normal as it increases blood flow to the scalp. I did notice some hair regrowth, especially around my hairline! Please note that I did color my hair, which is why it is lighter in the after. But overall, I am very happy with this product! I would definitely purchase the three step system! *I received this product for free for testing purposes.*
I received the Nioxin System 1 (3 pieces) for free for testing purposes. These are my own opinions. First, I’d like to share that I’ve been using the 3 piece set (shampoo, conditioner and scalp treatment) for a little over a month. I do not shampoo my hair daily and I try to go as many days as possible in between washes. That being said, I still saw some results in the short amount of time I used this product. First, the shampoo leaves your hair feeling clean. The smell is pleasant and there is a cooling, tingling sensation with these products that I really enjoy. My scalp can be on the dry side sometimes and it’s been looking clear with no irritation. The conditioner is nice and a little goes a long way. I massage the shampoo and conditioner into my scalp and ... MoreI received the Nioxin System 1 (3 pieces) for free for testing purposes. These are my own opinions. First, I’d like to share that I’ve been using the 3 piece set (shampoo, conditioner and scalp treatment) for a little over a month. I do not shampoo my hair daily and I try to go as many days as possible in between washes. That being said, I still saw some results in the short amount of time I used this product. First, the shampoo leaves your hair feeling clean. The smell is pleasant and there is a cooling, tingling sensation with these products that I really enjoy. My scalp can be on the dry side sometimes and it’s been looking clear with no irritation. The conditioner is nice and a little goes a long way. I massage the shampoo and conditioner into my scalp and I try to keep both products on for a few minutes in the shower so they can “sink in and work their magic†. After the shower I wrap my hair in a hair towel to absorb most of the moisture. Using a wide tooth comb, I detangle my hair, make a part on my scalp and spray the scalp treatment. I continue this all over my head. Comb-part-spray. I massage this product into my head and then style as usual. Ever since having kids (7 years ago) my hair has gone from crazy thick to thinning. It’s depressing and scary. I’ve collagen and biotin but I didn’t notice much of a difference. After using Nioxin for this short amount of time, I’m already seeing baby hairs!!! I’m hoping it’s new growth and not breakage. It looks like new to me. I wish this campaign was longer so I could have more time to know for sure. I’m happy with the results. When I finish this set, I may bump up to system 2.
I have also been using the shampoo and conditioner. I have thin fine hair with highlights. Let me tell you this stuff has a menthol tingle to it. It actually kind of hurt the first couple times i used it. This product is only for the scalp. It's easy to use. I just kept parting my hair and spayed the treatment directly onto the scalp. The container has a user friendly tip/nozzle on the end making it easier for the product to be applied on the scalp and not all over the hair itself. This treatment is watery and not thick at all. I can get the product distributed evenly over my scalp when the hair is towel dried and not dripping wet. I loved that there wasn't a sticky residue or a heavy feeling to my hair after I used my hair dryer. I'm not really sure if I noticed a ... MoreI have also been using the shampoo and conditioner. I have thin fine hair with highlights. Let me tell you this stuff has a menthol tingle to it. It actually kind of hurt the first couple times i used it. This product is only for the scalp. It's easy to use. I just kept parting my hair and spayed the treatment directly onto the scalp. The container has a user friendly tip/nozzle on the end making it easier for the product to be applied on the scalp and not all over the hair itself. This treatment is watery and not thick at all. I can get the product distributed evenly over my scalp when the hair is towel dried and not dripping wet. I loved that there wasn't a sticky residue or a heavy feeling to my hair after I used my hair dryer. I'm not really sure if I noticed a different in hair growth in the last 3 months while using the Nioxin System. I did notice a difference within 2 months of not this hair treatment my hair felt less healthy. When I got out of the shower there was more hair around the drain my brush was full of hair again and just looked awful. With all the money I spend on having my hair cut and colored, or buying products that promise voluminous hair with one use. I wasn't going to have any hair left. I started using the thinning hair line treatments immediately. I only use this product 3 or 4 times a week now its mostly for maintenance. The Nioxin hair line really works!! You just have to use the products consistently and stick with them. I wish I would have found this sooner.
I have never heard of this brand and was a little worried about using it. I was alittle confused because on the post card that came in the voxbox says it’s for thick hair. But on the bottles it says light thinning. Also when I used it I didn’t like how it made my hair feel while and after use. I’m not sure how to even describe it. But it gave my hair like synthetic feel to it. My husband made a joke saying it smelled like toothpaste lol. My hair is thick and curly and I didn’t feel like this brand suited my hair texture. I definitely will not be buying this. But this is my opinion. What doesn’t work for me may work for others. It’s definitely a big no for me.
I received this Nioxin Kit in my VoxBox and although I feel like I didn't get to use it long enough before reviewing, I am still impressed with the results. When it comes to the Scalp and Hair Treatment spray specifically, I'm not sure that it added to the effectiveness of the system. The shampoo and conditioner work wonderfully and give immediate results. I have used it both with and without the treatment spray and all I noticed from the added step was a crunchiness to the area of hair where it was applied. That could be my fault for applying too much at once though. It's possible that it needs to be used for a longer period of time before giving any noticable results. Overall this system is great and I would use it in the future for hair thinning/loss.
| Product dimensions | 8 x 5 x 12 cm; 130 Grams |
| Hair type | Color Treated, Thin |
| Scent | Unscented |
| Liquid volume | 100 Millilitres |
| Unit count | 100 millilitre |