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🌙 Wake up to thicker, fuller hair—because your scalp deserves an overnight glow-up!
The INKEY List 1% Caffeine Stimulating Scalp Serum is a 150ml overnight treatment formulated with 1% caffeine powder, 1% Redensyl, and 1% Betaine. Designed to reduce hair loss and stimulate hair follicle activity, it promotes thicker, healthier hair for all hair types. Fragrance-free, cruelty-free, and easy to use, consistent nightly application over 3 months delivers optimal results.






| ASIN | B09K8D3JHK |
| Active Ingredients | caffeine |
| Active ingredients | caffeine |
| Age Range Description | Adult |
| Best Sellers Rank | 11,351 in Beauty ( See Top 100 in Beauty ) 50 in Hair Serums |
| Brand | The INKEY List |
| Brand Name | The INKEY List |
| Customer Reviews | 4.3 out of 5 stars 296 Reviews |
| Hair Type | All Hair Types |
| Item Form | Serum |
| Item Volume | 150 Millilitres |
| Item Weight | 153 Grams |
| Item form | Serum |
| Item weight | 153 Grams |
| Manufacturer | Be for Beauty |
| Manufacturer Part Number | IH006KM |
| Material Type Free | Dye Free |
| Model Number | IH006KM |
| Number of Items | 1 |
| Recommended Uses For Product | Hair Fall Control, Hair Growth |
| Scent | Unscented |
| Scent Name | Unscented |
| Unit Count | 150.0 millilitre |
N**K
A solution for seasonal shedding and perimenopause thinning?
I have been using this product for a week and so far the results look promising. My particular issue is seasonal shedding, whereby I lose a lot of hair in the warmer months, particularly July and August, which then eases back in the colder months. That, combined with general perimenopause-related thinning, means I simply cannot grow my hair past shoulder-length without it looking ratty at the ends. Which is a downer because it suits me better when it's a bit longer. I have been applying the treatment every night before going to bed. It is cool to the touch, easy to apply on your finger tips and doesn't really smell of anything to me. On the first application I noticed the skin on my face felt really dry the next morning, but I figured it was because the treatment was migrating on to my face from the pillow as I slept. Putting my hair in a fine wool snood overnight after treatment seems to have solved that one. My hair is not greasy in the morning, and the treatment seems to have soaked in and disappeared, which is great as, being very fine and curly, I only wash and brush my hair every three days. Just spritz, scrunch and go. Then, when I washed my hair for the second time after starting the treatment (at the end of week 1), I discovered that only the tiniest amount actually came out in the brush (see picture, measured against a one penny piece - about the same size as a 1 cent). Admittedly this is the winter, so I would expect to be shedding much less now anyway, but still it seemed to be a particularly small amount, after three days since my last wash and brush. Could it be working already? Admittedly the real test will come when the days lengthen and the temperature rises, so this is a review 'part 1', which I will come back to when I have continued the treatment through the summer. Handily, Amazon offer this on a subscription, so I won't run out. I'll be back with an update in 8 months or so....
M**O
It’s brill and really works
This stuff is brillll. I had an issue with my hair falling out so I got this serum to try. I been using this every night before going to sleep and when I awoke it’s dried. Anyways, I did this for a week and it worked it really has. No hair loss at all even when I brush my hair first thing on getting up. I would highly recommend this serum to anyone who has this issue I had.
D**I
Try this product now!
This product is great for the scalp. It's not oily to my scalp which is great. I would recommend this product because my hair is growing better than it has before. Although I wish it would cost a bit less - maybe even £10.
S**Y
Fab
The bottle seems to last quite a while which is nice and it’s obviously wet on your hair but doesn’t dry greasy and I do think it’s helping my hair to grow a little. I do love inkey list products anyway
H**Y
There’s growth
I have alopecia areata, and have tried a lot of things throughout the years to no actual avail. Whether this was coincidence or not, after two weeks of use I started getting white regrowth. Mine works where the white grows through first and then falls out, to be replaced with coloured hair. The white that’s grown through is stronger, thicker and healthier than usual. It also smells nice.
K**I
Works for me
This is my "go to" once a week hair treatment. Been using it for months and I mix it with other hair oils I use to give it that extra boost for my hair and I can see a great difference! Remember though, consistency is key.
J**E
Hasn't worked for me
I've got fine hair that has been getting thinner due to hormonal changes. I applied this as instructed but haven't noticed a difference after using for 3 months. It hasn't made my hair greasy, it is easy to apply. I can't say it's worked for me though.
L**E
Great. It works
I've been using this for a couple of months now. I use it twice a week on the days leading up to when I'm going wash my hair. Overall my hair feels thicker. I'm not sure about breakage at the min but it's definitely helping my hair and I will continue to buy
R**N
good so far
This caffeine treatment is very lightweight and does not give hair a greasy and dirty feel when used. i use it after washing my hair and i have not encountered any issues so far. that being said although i have noticed a slight reduction in hair fall the long term affects are yet to be seen. and since it is water based it might not be suitable for curly and coily hair that has been heat styled
C**R
😀
😀
S**R
Danke
Gud prodaak
M**N
Ne me convient pas du tout.
Après deux mois d’utilisations : aucun effet, cuir chevelu sec et poisseux (incroyable mais vrai) et surtout AUCUNE REPOUSSE de plus que d’ordinaire… je n’attendais rien de ce produit, mais si vous en attendez le strict minimum vous serez déçu(e)
A**D
Rotten smell
I thought it would have the consistency of an oil but it’s watery. But regardless, the thing that is bugging me is the smell, the smell resembles something rotten. Not sure if that’s how it’s supposed to smell like
Trustpilot
2 days ago
2 months ago