Apply
Part the hair and place a few drops directly on the scalp.
Root Activating Serum
Light, leave-in scalp care with Capilia Longa™, caffeine and niacinamide.
Format
50 ml serumPairs with Hair Butter
Size: 50 ml · 1.69 fl ozRegular price $32.99, sale price $20.99
- 30-day money-back guarantee.
- Free US shipping over $50 · Made in Korea
- Secure Shopify checkout
A lightweight leave-in scalp serum with caffeine, turmeric, and a Korean herbal blend that keeps a dry-feeling scalp hydrated, balanced, and comfortable.
- A light, non-greasy serum that absorbs fast
- Caffeine, turmeric, and Korean herbal extracts for daily scalp care
- Leave-in and simple: a few drops, a quick massage, done
50 ml · 1.69 fl oz
Apply a few drops directly to a clean scalp, massage in gently with fingertips, and leave it in. No rinsing. It fits morning or night, on dry or towel-dried hair.
Free US shipping over $50, $8 flat rate under $50. 3 to 5 business days. 30-day money-back guarantee. Details
What it does
Lightwater-based feel
Non-greasyroots keep their volume
Absorbs fastdaily scalp care
Capilia Longa™ 1%clinically studied ingredient*
Leave-ina few drops and a quick massage
*Ingredient-level: the supplier's 150-day, placebo-controlled human study of Capilia Longa at 1%. It tested the ingredient, not this finished serum.
Daily scalp care. A few drops. No rinse.
A simple daily scalp ritual
Use morning or night on a clean scalp, on dry or towel-dried hair.
Keep it light
The water-based serum absorbs fast without a greasy film.
Pair the routine
Serum stays on the scalp. Hair Butter rinses from lengths and ends.
Three steps, morning or night
Leave it in. No rinsing.
01 · Part
Apply a few drops directly to a clean scalp.
02 · Massage
Massage gently with fingertips.
03 · Leave in
Use morning or night. No rinse.
Powered by Capilia Longa™
A clinically studied turmeric root complex,* at 1% in every bottle.
Capilia Longa™ · 1%turmeric root complexCaffeineselected ingredientNiacinamideselected ingredientKorean herbsdaily scalp care
*Ingredient-level: the supplier's 150-day, placebo-controlled human study of Capilia Longa at 1%. It tested the ingredient, not this finished serum.
Selected ingredients are not the complete formula. Check the product packaging for the full ingredient list.
Watch Root Activating Serum in action
Serum or Hair Butter?
They care for different areas and pair well in one routine.
| Root Serum | Hair Butter | |
|---|---|---|
| Use on | Clean scalp | Damp mid-lengths and ends |
| Routine | A few drops, daily | After shampoo, 3 to 5 minutes |
| Rinse | No | Yes, thoroughly |
| Texture | Light, water-based, non-greasy | Rich rinse-out butter |
How to use Root Activating Serum
Apply a few drops directly to a clean scalp, massage in gently with fingertips, and leave it in. No rinsing. It fits morning or night, on dry or towel-dried hair.
- Size
- 50 ml · 1.69 fl oz
- Amount and timing
- A few drops on a clean scalp, daily, morning or night
- How long
- Give it 40+ days of daily use before judging results
- Rinse
- No rinse. It stays on the scalp.
Is it the same as the Hair Butter or a hair oil?
No. Root Activating Serum is a leave-in cosmetic for the scalp. Nourishing Hair Butter is a different product: a rinse-out mask for mid-lengths and ends that stays off the scalp. Anuko's discontinued hair oil is not part of the current US range. Hair Butter reviews, ratings and awards do not apply to this serum. See the rinse-out Hair Butter.
What do the ingredient study and the product test cover?
This serum contains Capilia Longa, the turmeric root complex named on the label, at 1%. The ingredient's supplier studied it in its own 150-day, placebo-controlled human study; that study tested the ingredient, not this finished serum. The finished serum was tested separately in a human application test (ProbeM Clinical Research Center, Korea, 2026) for cosmetic scalp-care measures such as scalp soothing and root volume. Individual results may vary. Anuko does not claim that the serum grows or regrows hair, or that it prevents or reduces hair loss. The complete ingredient list is printed on the package.
Your take
Share your takeTried the serum? Tell us how your scalp feels.
Complete the ritual
Pair scalp care with wash day
Root Activating Serum stays on the scalp. Nourishing Hair Butter rinses from mid-lengths and ends.
See the Hair ButterQuestions
Frequently asked.
Scalp care builds gradually, not overnight. Use it every day, once or twice daily, and give it at least 40 days of consistent use before judging your results. Individual results vary.
No. It is a light, water-based serum that absorbs quickly and leaves no greasy film, so roots keep their volume.
Yes, they are made to pair. The serum stays in and cares for your scalp, and the rinse-out Hair Butter cares for mid-lengths and ends.
It is sold as a cosmetic scalp-care serum. Anuko does not claim that it grows new hair, reverses hair loss or thickens hair.
The selected ingredient list highlights caffeine, turmeric root extract, niacinamide, Angelica gigas root extract and green tea leaf extract. These are selected ingredients, not the complete formula. Check your product's packaging for its full ingredient list.
We ship in the United States only. Shipping is free on orders over $50, and orders under $50 ship for a flat $8. Orders arrive in 3 to 5 business days, and tracking is sent by email when your order ships.
We stand behind it with a 30-day money-back guarantee. Email hello@tryanuko.com within 30 days of delivery for a full refund.