90-Day Love-It Guarantee · Read early reviews ↓
A lightweight scalp serum — water-light, misted straight onto the scalp — plus a simple 3-step routine, for people who gave the hype a fair chance and want scalp care they can actually keep using.
Light enough to keep. Honest enough to trust. The calm-confidence routine — not another bottle you quit in a week.
Core is the one we recommend — it starts with the scalp step and previews all three steps, so you feel how the routine fits before buying every full size. Prefer to test the serum alone first? Essential is just below.
Actives you can research yourself → full ingredient list. Ingredient studies are not finished-product claims.
✓ Free US shipping on Core & Complete✓ 90-Day Love-It Guarantee (first one-time order)✓ Shop Pay, Apple Pay & Google Pay
See how the routine works ↓The reviews below come from our US tester panel — people who used the routine for about four weeks and wrote what they found. Every tester received the kit free in exchange for an honest review, and their reviews are labeled as such. We publish all of them, unedited. Star ratings appear once we reach 10 reviews.
I've tested the routine for about 4 weeks and really enjoyed all three products.
Personally, I'm a big fan of the scent - it reminds me of Christmas!
I always double-shampoo and feel like my scalp is really clean afterwards. The conditioner works great for my hair too and does a good job at detangling and softening my lengths.
I'm also really enjoying the serum, as I've never encountered one with such a light formula. It is certainly too early to notice any changes but it feels great on my scalp. I'll definitely continue using all three products!
Note: I got the products as a gift.
Thank you, Leonie — this is exactly the kind of detail we hoped for. For readers: Leonie is part of our tester panel and received the kit free in exchange for an honest review. We publish every tester review unedited, including the ones that sting. — The HERLAYRA team
During these weeks of use, I noticed my scalp felt much cleaner, fresher, and free of product buildup. Its tea scent is very pleasant and relaxing upon application. My hair feels more hydrated, soft to the touch, and has a noticeable natural shine right from the first uses. What changed the most was the elasticity and definition of the hair strands, along with a lightweight feel. What hasn't fully changed yet is the density in areas with newer growth, but I know it's a gradual process. Overall, it's an excellent kit to maintain hair health, and I absolutely love this kit!
Thank you, Ana Luisa — this is exactly the kind of detail we hoped for. For readers: Ana Luisa is part of our US tester panel and received the kit free in exchange for an honest review. We publish every tester review unedited, including the ones that sting. — The HERLAYRA team
I really enjoyed adding this routine to my daily self-care. The scalp serum became such an easy habit for me — I keep it next to my toothbrush so I remember to use it every day during my morning routine. I apply it directly to my scalp and take a little time to massage it in, which I actually really enjoy.
The formula feels very comfortable on my scalp. I didn’t experience any burning, irritation, or unpleasant sensations at all. I also really like the scent and how lightweight the products feel. My hair doesn’t feel heavy or weighed down after using them, and my roots still feel fresh.
Over the weeks, my scalp has felt comfortable, refreshed, and well cared for. I haven’t noticed a dramatic change in hair growth yet, but I’ve really enjoyed the consistency of the routine and how easy it has been to use every day.
Thank you, Natallia — this is exactly the kind of detail we hoped for. For readers: Natallia is part of our US tester panel and received the kit free in exchange for an honest review. We publish every tester review unedited, including the ones that sting. — The HERLAYRA team
After using the Scalp Serum Routine Kit consistently for several weeks, my scalp felt more hydrated, refreshed, and comfortable. I also noticed that my hair felt softer and looked healthier overall. I really enjoyed how easy the products were to incorporate into my routine without leaving my scalp or hair feeling heavy or greasy. Overall, it has been a great addition to my hair care routine, and I’m very happy with my experience.
Thank you, Iva — this is exactly the kind of detail we hoped for. For readers: Iva is part of our US tester panel and received the kit free in exchange for an honest review. We publish every tester review unedited, including the ones that sting. — The HERLAYRA team
Watch early testers apply it:
From early testers who received the product free in exchange for an honest review.
The short quotes elsewhere on this page come from Amazon Vine reviewers (2026), who also received the product free in exchange for an honest review.
Made to absorb fast — with none of the heavy-oil feel — the reason you'll keep using it.
Misted straight onto the scalp — the step most routines skip.
Named cosmetic actives in plain view — not a mystery blend.
60 seconds a day, wash days and non-wash days. Simple enough to stick with.
"doesn't leave my hair oily… nice clean scent"— Coastal Drifter, Amazon Vine reviewer (received the product free in exchange for an honest review)
"The scent… is fantastic"— Gehner, Amazon Vine reviewer (received the product free in exchange for an honest review)
The best part isn't a promise. It's a minute you'll actually enjoy.
Part your hair. Mist the water-light serum straight onto the scalp — made to feel light after application, not a heavy film at your roots. Then massage — slowly — for ten to fifteen seconds. That's the whole thing: a small, calm pause in your day that happens to be the one step your routine was missing.
And here's what "worth it" actually feels like: not a dramatic transformation photo — something quieter, and better. The morning you catch your reflection on the way out the door and just… keep walking. Calm confidence you stop having to manufacture. That's what the 2–3 month window is really for — giving one simple, easy-to-keep step enough time to become the reason you finally stop switching.
Maybe you've tried ten things and finished every bottle. Maybe you've just started paying closer attention to your hair and your scalp, and you'd rather get it right early. Either way, you don't need a bigger promise — you need better reasons to believe.
Why start at the scalp? It's the step most routines skip. HERLAYRA keeps it simple: cleanse the scalp, condition the lengths, then mist the scalp directly with a lightweight leave-in serum — wash day or not.
HERLAYRA isn't here to promise more. It's here to earn a place in your routine.
Your scalp, your wash day, and your lengths don't want the same thing. So the routine targets the scalp, cleanses on wash days, and conditions the lengths — three steps, not three bottles telling the same story.
The wash-day cleanse, with its own job to do.
Softness and manageability through the lengths.
The targeted scalp step, wash days and non-wash days.
Daily AnchorCore starts with the targeted scalp step and adds the wash-day minis, so you can feel how the routine fits before committing to every full size. You're not paying a premium for one famous ingredient name — you're paying for a step you'll actually keep, and a system that replaces the pile of single products you've been rotating.
Ready for all three full sizes? Choose Complete for the full routine from day one.
Start With Core
Most "breakthrough" serums won't tell you what's inside. We will — the names are in plain view, not behind a mystery blend.
Named actives, in plain view. The modern cosmetic actives you can research yourself — Redensyl®, Procapil™ and Baicapil™ — are listed alongside supporting ingredients, with the full ingredient list on the packaging.
Selected botanical depth. Botanical extracts and oils give the formula — and the brand — its character. Heritage isn't finished-product evidence.
Hair-feel support. Panthenol, niacinamide, and conditioning ingredients support feel and manageability.
Where the evidence stands. The studies behind these actives were run on the ingredients, not on our finished formula — a reason to be interested, not a finished-product claim.
Scalp Serum. Water (Aqua), PEG-40 Hydrogenated Castor Oil, Butylene Glycol, PPG-26-Buteth-26, Apigenin, Oleanolic Acid, Biotinoyl Tripeptide-1, Propanediol, Arginine, Lactic Acid, Glycine Soja (Soybean) Germ Extract, Triticum Vulgare (Wheat) Germ Extract, Scutellaria Baicalensis Root Extract, Gluconolactone, Calcium Gluconate, Sodium Benzoate, Glycerin, Sodium Metabisulfite, Larix Europaea Wood Extract, Glycine, Zinc Chloride, Camellia Sinensis Leaf Extract, Phenoxyethanol, Ethylhexylglycerin, Propylene Glycol, Sophora Flavescens Root Extract, Capsicum Annuum Fruit Extract, Lycium Chinense Fruit Extract, Angelica Gigas Root Extract, Angelica Dahurica Root Extract, Rubus Coreanus Fruit Extract, Morus Alba Root Extract, Pinus Palustris Leaf Extract, Lithospermum Erythrorhizon Root Extract, Polygonum Multiflorum Root Extract, Eleusine Indica Extract, Zingiber Officinale Root Extract, Hydrolyzed Jojoba Esters, Disodium EDTA, Hydroxyethylcellulose, Citric Acid, Citrus Grandis (Grapefruit) Peel Oil, Eugenia Caryophyllus Leaf Oil, Ocimum Gratissimum Oil, Methylpropanediol.
Shampoo. Water (Aqua), Cocamidopropyl Betaine, Sodium C14-16 Olefin Sulfonate, Sodium Methyl Cocoyl Taurate, Decyl Glucoside, PEG-120 Methyl Glucose Dioleate, PEG-7 Glyceryl Cocoate, Phenoxyethanol, Ethylhexylglycerin, Polyquaternium-7, Piroctone Olamine, Propyltrimoniumchloride Acrylamide/Dimethylacrylamide Copolymer, Citric Acid, Caramel, Polyquaternium-10, Panthenol, Niacinamide, Disodium EDTA, Glycerin, Butylene Glycol, Methylpropanediol, Gleditsia Australis Fruit Extract, Polygonum Multiflorum Extract, Eclipta Prostrata Extract, Camellia Sinensis Leaf Extract, Zingiber Officinale Root Extract, 1,2-Hexanediol, Sodium Benzoate, Eugenia Caryophyllus Leaf Oil, Ocimum Gratissimum Oil, Citrus Grandis (Grapefruit) Peel Oil.
Conditioner. Water (Aqua), Cetearyl Alcohol, Behentrimonium Chloride, C12-15 Alkyl Benzoate, Isododecane, Caprylic/Capric Triglyceride, PPG-3 Caprylyl Ether, Cetyl Alcohol, Gamma-Docosalactone, Phenoxyethanol, Ethylhexylglycerin, Glycerin, Cetearamidoethyldiethonium Succinoyl Hydrolyzed Pea Protein, Butylene Glycol, Propanediol, Polygonum Multiflorum Extract, Sodium Benzoate, Citric Acid, Butyrospermum Parkii (Shea) Butter, Cocos Nucifera (Coconut) Oil, Panthenol, Niacinamide, Hydrogenated Rapeseed Oil, Citrus Grandis (Grapefruit) Peel Oil, Eugenia Caryophyllus Leaf Oil, Ocimum Gratissimum Oil.
Full ingredient lists are also printed on the packaging. For external use only.
We promise —
We won't —
Overpromise a hair outcome or position HERLAYRA as anything more than cosmetic scalp care · show transformation photos we can't substantiate, standardize and legally stand behind · call ingredient science proof of our finished product.
"We were tired of bottles that promised the world and sat heavy on our roots by noon. So we built the one step every routine skipped — and we'd rather show you the product as it is than sell you a miracle."
— La Van Thang, Founder, HERLAYRA
This is an observation framework — a fair way to evaluate the routine. It is not a guarantee of a hair result. Results vary. First, judge fit and feel — where the product goes, how it fits your day, the herbal scent, whether it's easy to keep using. Don't read a hair outcome into an early sensory experience — hair appearance is a longer story and varies by person.
HERLAYRA was born in Vietnam and built for modern scalp care. Our point of view is shaped by living hair-care traditions, botanical memory, and a culture of care — then rebuilt for modern scalp care with purpose-built formulas and evidence discipline.
We don't use heritage as proof of efficacy. Heritage explains where the point of view comes from; formula truth and evidence decide what we may claim.
90-Day Love-It Guarantee — love it in 90 days or your money back. Applies to your first one-time order on HERLAYRA.com — Essential, Core, or Complete. See guarantee terms.
To be clear: this is purchase protection — a promise about your money, not a promise of a specific hair result. Results vary. See full guarantee terms.
Core is our recommended first routine: the targeted scalp step plus the wash-day minis — without jumping straight to every full size.
"The serum is easy to apply and absorbs well… without feeling greasy or heavy"— Kiki, Amazon Vine reviewer (received the product free in exchange for an honest review)
Secure checkout · Cosmetic product · 90-Day Guarantee (first one-time order) — terms apply · Results may vary
