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Caffeine stimulating scalp treatment | The INKEY List

Helps to encourage natural hair growth cycle by stimulating scalp & hair follicles

Rated 4.2 out of 5 stars
4.2 Stars (114 Reviews)
$16.00 / 150ml


An overnight hair growth serum that uses caffeine powder and an ingredient called Redensyl™ to help reduce hair loss by stimulating the scalp and hair follicles, therefore encouraging hair growth and helping to improve hair thickness.

Consistent use every night over a 3 month period produces best results.

Suitable for:

  • All Hair Types
  • Sensitive Scalps
  • Colored Hair
  • Pregnancy & Breastfeeding


  • Thinning Hair

Proud to be:

  • Carbon Net-Zero
  • B-Corp
  • Cruelty Free
  • Recyclable
  • Vegan
  • Gluten Free
  • Fragrance Free
  • Alcohol Free
  • Silicon Free
  • Sulphate Free

Delivery info

Standard tracked shipping


Free on oders $35+

Express tracked shipping

$15 (2-3 business days*, when ordered before 3pm EST)

*Find out more about shipping here.

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Rated 4.2 out of 5 stars
Based on 114 reviews
Total 5 star reviews: 67 Total 4 star reviews: 25 Total 3 star reviews: 8 Total 2 star reviews: 2 Total 1 star reviews: 12
114 reviews
  • kaisa t.
    Verified Buyer
    I recommend this product
    Age Range 18 - 24
    Hair Type Straight
    Hair Goals Hair Growth
    Rated 5 out of 5 stars
    1 hour ago
    My hair has grown noticeably longer

    I recommend this if you want to make your hair grow faster. My hair is now longer that it has been for years!

  • Londa T.
    Verified Buyer
    I recommend this product
    Age Range 45 - 54
    Hair Type Wavy
    Hair Goals Hydration, Repair Damaged Hair, Increased Volume, Hair Growth, Curl Definition
    Rated 4 out of 5 stars
    2 weeks ago
    Works with consistent use

    I have used this product for about 6 months. I saw improvement, less hair fall, thicker hair, new hairs coming in at about the 3rd month. Unfortunately I had surgery and stopped using it for about 2 months. During that time I had more hair fall so I started using it again. I noticed it working a little faster this time. It doesn't irritate my skin and isn't greasy. I love this this product.

  • Silvija
    Verified Buyer
    I recommend this product
    Age Range 18 - 24
    Hair Goals Hair Growth, Nourish Hair
    Rated 5 out of 5 stars
    1 month ago
    Really works!

    I’m slowly reaching the finish line of the third bottle. I see a real difference. The product made the hair recovery after serious illness much more sufficient. However, my hairstylist told me that the product should not be used for more than 3 months at once.

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