The INKEY List Caffeine Stimulating Scalp Treatment.

Haircare

About this product

A lightweight scalp treatment with caffeine and antioxidants designed to support scalp health and promote the appearance of fuller hair.

Full ingredients

Water (Aqua/Eau), Betaine, Caffeine, Panthenol, Phenoxyethanol, Glycerin, Xanthan Gum, Ethylhexylglycerin, Trisodium Ethylenediamine Disuccinate, Lactic Acid, Sodium Metabisulfite, Glycine, Larix Europaea Wood Extract, Camellia Sinensis (Tea) Extract, Zinc Chloride

Guru Score

75%

Yay

Early verdict · Few reviews so far

What the gurus are saying

The lightweight, greasiness-free serum earns praise for allowing regular use without weighing hair down, though experts split on whether it actually makes thinning hair look fuller. The product combines caffeine, lactic acid, green tea, and panthenol to keep the scalp healthy and support the appearance of fuller, thicker hair, and new packaging makes dispensing easier than before.

Synthesized from 3 expert reviews · most recent take December 2025

What they liked

Lightweight texture
Improved packaging, easier to dispense

What they flagged

Didn't deliver noticeable scalp results

Type

HaircareLiquid

Key actives

AHA

Formula notes

Fragrance-freeNo drying alcohol

Where to buy

Sephora → Ulta → Amazon → Google →

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What the gurus are saying.

Every take we've logged from this product's reviews across YouTube. Click any row to watch the moment they said it.

All takes Yay takes Nay takes Mixed takes Hide sponsored

Dr. Vanita Rattan

1.23M subs

✓Yay

"The inky list does a caffeine stimulating treatment as well."

Cassandra Bankson

2.46M subs

✓Nay

"Even the Caffeine Stimulating Scalp Treatment I was using it on like a legit portion of my scalp, I didn't see much of a difference, that was disappointing."

All 2 takes from Cassandra Bankson

10 Best & Worst Hair Growth Treatments That I’ve Tried At Home

"Even the Caffeine Stimulating Scalp Treatment I was using it on like a legit portion of my scalp, I didn't see much of a difference, that was disappointing."

What I'm Doing About My Hair Loss…

"There's one that is a caffeine serum that says it's the Caffeine Stimulating Scalp Treatment. Specifically says it's a hair loss reduction serum. I might try that in between the Ordinary and the Caractor one. But I got it. I like that there's new packaging because the old packaging was terrible. You couldn't even get stuff out of the bottle."

Dr. Jenny Liu

323k subs

✓Yay

"What I do love about this serum, number one it's really lightweight, so for individuals who are seeking a serum to keep your scalp healthy to support you on your hair growth journey I think this is a great one to use. Along with caffeine it also contains lactic acid, green tea, and panthenol, so ingredients that help to hydrate the skin, support the skin moisture barrier, antioxidants that are going to keep your scalp healthy."

What the evidence says.

Independent of what the gurus think, this is what the published research supports about the main active ingredients here.

Alpha hydroxy acids

Alpha hydroxy acids loosen the bonds holding dead cells at the surface. The evidence supports smoother texture and more even tone over time, and they can leave skin more sensitive to sun.

Source: NIH, National Library of Medicine

Humectants and emollients

Ingredients like these draw water into the surface layers and slow how fast it leaves. The evidence is for comfort, softness and hydration rather than for changing the structure of the skin.

Source: DermNet

Frequently asked.

What is The INKEY List Caffeine Stimulating Scalp Treatment?

A lightweight scalp treatment with caffeine and antioxidants designed to support scalp health and promote the appearance of fuller hair.

Is The INKEY List Caffeine Stimulating Scalp Treatment worth it?

Mostly yes. 2 of the 3 gurus who reviewed it give it their stamp of approval, for a Guru Score of 75%.

What is The INKEY List Caffeine Stimulating Scalp Treatment's Guru Score?

The INKEY List Caffeine Stimulating Scalp Treatment holds a Guru Score of 75%. That is our read on how warmly the experts talk about it, based on the verdicts of 3 expert reviewers we have collected.