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Caffeine stimulating scalp treatment
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Before and after of customer using Caffeine Scalp Treatment
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Caffeine stimulating scalp treatment

Hair growth serum designed with caffeine and Redensyl™ to help stimulate scalp and support healthier-looking hair over time

4.3
Rated 4.3 out of 5 stars
4.3 Stars (246 Reviews)
$17.00 / 150ml

Use code MYSTERY at cart to unlock your mystery discount. *Full price lines only

What you get: The overnight scalp treatment designed to support your hair growth goals naturally and effectively.

Why it works: Our concentrated formula combines 1% Caffeine Powder with 1% Redensyl™ - two well-researched ingredients chosen for their hair-supporting properties. Caffeine helps stimulate blood flow to hair follicles, while Redensyl™ is designed to help reactivate dormant follicles for improved hair density over time.

How it feels: Lightweight and non-greasy formula that works while you sleep.

When to use: Apply every night to clean, dry scalp. Best results come with consistent use over 3+ months - good hair care takes patience.

Suitable for:

  • All hair types
  • Sensitive scalps
  • Colored hair
  • Pregnancy & breastfeeding

Targets:

  • Thinning hair

Awards & Features

Understanding Hair Growth Support

Why Hair Changes Over Time Hair naturally goes through growth cycles, but factors like stress, hormones, and genetics can affect these cycles, leading to changes in hair density and thickness.

How Caffeine Supports Hair Health Caffeine is known to improve circulation when applied topically to the scalp, helping to deliver nutrients to hair follicles and potentially extending the active growth phase.

What Is Redensyl™? Redensyl™ is a patented complex designed to target hair follicle stem cells, helping to support the natural hair growth process by encouraging follicle activation.

Setting Realistic Expectations Hair growth is a slow process - the average hair grows only ½ inch per month. Visible improvements in thickness and fullness typically require 3+ months of consistent use with any hair growth support product.

Shipping info

  • Standard USA Tracked Shipping from $7.95* (2-5 business days*). FREE on orders over $40.
  • Standard Tracked Shipping rates per state:
  • $7.95 – Alabama, Arkansas, Colorado, Connecticut, Delaware, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia,West Virginia, Wisconsin, Wyoming
  • $8.95 – Alaska, Arizona, California, Hawaii, Idaho, Nevada, Oregon, Washington


We are currently unavailable to ship to Guam, Puerto Rico or the US Virgin Islands due to carrier restrictions.  

  • *Please note the above shipping timelines are estimates and not guaranteed. Sometimes there may be delays – e.g. carrier delays, logistics, bad weather or things out of our control.   


Find out more about shipping here.

Our team can be reached via our contact us page with any further queries you have or email help@theinkeylist.com for any queries on delivery or taxes. 

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  • Before and after showing results of Caffeine stimulating scalp treatment
    "No smell, no weird texture, clearly largely water based, perfect. After years of using Minoxidil, i kept losing my hair, and had those well known bad side effects on my skin. No side effects at all with the this."

    Arnauld

4.3
Rated 4.3 out of 5 stars
Based on 246 reviews
Total 5 star reviews: 150 Total 4 star reviews: 55 Total 3 star reviews: 18 Total 2 star reviews: 4 Total 1 star reviews: 19
Reviews Summary
Customers say this scalp treatment shows promising results for many users. Many reviews mention seeing baby hairs and reduced shedding within a few weeks to months of consistent use. The lightweight formula absorbs quickly, though some note it can leave residue that requires morning washing. Reviews are mixed on texture - while some find it non-greasy, others mention flaking or buildup. Most users emphasize patience is key, with noticeable changes typically appearing after 2-3 months of regular application. A few report scalp sensitivity or irritation.
246 reviews
  • Giota A.
    Verified Buyer
    Reviewing
    Caffeine stimulating scalp treatment
    Age Range 35 - 44
    Hair Type Wavy
    Hair Goals Repair Damaged Hair, Hair Growth
    Have you purchased an INKEY List product before? Yes
    How long have you used this product for? 1 month - 3 months
    Rated 3 out of 5 stars
    1 week ago
    Didn't work for me

    I used two bottles of the product and didn't notice any change. It's relatively easy to use and has a pleasunt smell.

  • Katja
    Verified Reviewer
    Reviewing
    Caffeine stimulating scalp treatment
    I do not recommend this product
    Age Range 45 - 54
    Hair Type Wavy
    Hair Goals Repair Damaged Hair, Hair Growth, Increased Volume
    Have you purchased an INKEY List product before? Yes
    How long have you used this product for? Less than 1 week
    Rated 2 out of 5 stars
    1 week ago
    Nozzle is not practical

    On the bottle, you've written different instructions on how to apply this product. Also the video shows a woman applying the product directly from the bottle from the scalp. However, the nozzle is of the "on or off" type, and in two days, already half of the bottle is gone. I probably change to another brand with a better bottle. The product itself seems okay, and it doesn't make my hair oily or weird.

    IU Profile picture for INKEY USA
    INKEY USA
    2 days ago

    Hi Katja, thank you for such useful and detailed feedback - we're glad the product itself is working well for you. That said, we're sorry the nozzle isn't the experience you want.
    We also want to apologise for the confusion between the instructions on the bottle and the application video. Please do reach out to our Customer Experience Team directly (ask@theinkeylist.com) - we'd love to make this right for you and look into the dispensing issue further. 💙

  • jennifer m.
    Verified Buyer
    Reviewing
    3 Month Hair Growth Trio
    I recommend this product
    Age Range 35 - 44
    Hair Type Wavy
    Hair Goals Hydration, Increase Shine & Gloss, Repair Damaged Hair, Hair Growth, Increased Volume
    Have you purchased an INKEY List product before? Yes
    How long have you used this product for? 1-3 weeks
    Rated 5 out of 5 stars
    4 weeks ago
    It’s working

    My hair is getting thinker and growing