HAIR GROWTH SERUM
PDRN Scalp Serum
★★★★★4.9 from 1,224 reviews100ml · PDRN, caffeine and menthol · brush applicator
- Fuller-looking roots. Lifts the buildup that flattens your part.
- A scalp that feels clean. Not tight, not itchy, not greasy.
- Day two hair you can live with. Push the wash another day.
- You feel it in seconds. A cool, fresh tingle on contact.
60 days to decide. Full refund, no return needed.
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How to use
Three steps. No rinse.
Nothing on your hands, nothing to wash out. Style as normal straight after.
Part
Twist the cap to ON. On damp or dry hair, press the brush flat to your scalp along your part.
Brush back
Squeeze gently and brush straight back from your part. Work across your scalp. The cooling kicks in within seconds.
Leave it
That's it. No rinsing, no residue. Style as normal and get on with your day.
What's inside
What's doing the work.
Four things worth knowing about. The full list is printed on the tube, nothing hidden.
PDRN
The Korean skincare actif this whole category is built on, now in a format made for the scalp.
Cica
Centella asiatica, the calming K-beauty staple, here as a four-part complex.
Caffeine
The one you already know from your skincare shelf, finally pointed at your scalp.
Menthol
The cool, fresh tingle you feel within seconds of it touching your scalp.
Leave-on, no rinse, and nothing left sitting on your hair.
THREE MONTHS IN
What three months looks like.
Same hair. Glossier, because the root is clean instead of coated. Fuller looking, because hair that is not weighed down sits up and catches the light. Healthier looking, because a scalp that is looked after shows in the first inch.
Loved and verified
What it actually feels like, in their words.
No grease, none at all
This was my only worry and it is genuinely not an issue. I put it on, tie my hair up, and it looks exactly the same as it would have anyway.
Renee A.
Verified buyerYou feel it straight away
The cooling starts about three seconds in. I have never used anything where you can actually tell it is working the moment it goes on.
Sophie M.
Verified buyerThe brush is the whole thing
I thought it was a gimmick. It is the entire reason this works. Droppers never got near my scalp, this parts my hair and goes straight on.
Georgia K.
Verified buyerFinally in stock here
I had been waiting three weeks at a time ordering PDRN from overseas sites. Ordered Friday, here Monday. That alone sold me.
Tayla T.
Verified buyerMy day two hair is different
My roots used to go flat and gross by Tuesday. My scalp just feels clean now and my hair looks fuller at the front.
Brooke S.
Verified buyerTook a couple of goes
Getting the brush angle right took me a few tries and I used way too much at first. Once I worked it out I was hooked.
Paige B.
Verified buyerEverything you are wondering
The honest answers
Will it make my hair greasy?
No, and this is the one everybody checks first. The formula is lightweight and water-light rather than oily, and the brush puts it on your scalp instead of down the lengths, so there is nothing sitting on your hair to weigh it down. You can blow dry, straighten or tie it up straight after and it behaves exactly as it normally would. If anything, people tell us their roots hold better.
Do I have to rinse it out?
No. It is a leave-on, which is the whole point. Part, press, massage in, and get on with your morning. Three minutes, no shower required, which is why it is a routine people actually keep rather than one they abandon by week two.
What does the cooling actually feel like?
A fresh, tingling lift that starts within a few seconds and settles after a minute or two. It is the part most people say sold them, because unlike almost everything else in a bathroom cabinet, you can tell it is doing something immediately. If it ever feels uncomfortable rather than cool, rinse it off and stop using it.
What is PDRN?
PDRN stands for polydeoxyribonucleotide. It is the ingredient that has taken over Korean skincare over the last couple of years, first in face serums and now on the scalp. It has been genuinely hard to get hold of in New Zealand, which is most of the reason this exists.
Will it work on my hair type?
Yes, on all of them, and the brush is the reason. On thick or curly hair a dropper or a spray mostly lands on the hair itself and never reaches the skin. The brush parts it and puts the serum exactly where it is meant to go. Fine hair is covered too, because nothing is left sitting on the lengths. It is also completely fine on colour-treated hair, extensions and after a keratin treatment, since it goes on the scalp rather than the hair.
I noticed hairs in the brush. Is that normal?
Yes, and it is not the serum doing it. Everybody sheds somewhere between 50 and 100 hairs a day without noticing. Massaging your scalp releases the ones that had already let go, so they collect in the bristles instead of turning up in the shower or on your pillow later. You are seeing them, not causing them, and it usually settles down once you are a week or two in.
Is this a hair loss treatment?
No, and we are not going to pretend otherwise. Lumia is a cosmetic scalp care product, not a medicine. What it does is cool and clean the scalp, lift buildup, and leave hair looking fuller at the roots. If hair loss is your actual concern, see your doctor or a dermatologist. They can help with that properly, and we would rather tell you straight than sell you the wrong thing.
How long does one bottle last?
Around 6 to 8 weeks at daily use, longer if you use it every other day. The brush meters it as you go, so you use far less than you would tipping a serum onto your fingers and losing most of it on your palms.
Can I skip or cancel anytime?
Always, and in a couple of taps from your account. Skip a delivery, change how often it arrives, or cancel outright. No phone calls, no retention script, no hoops. Every subscription order ships free, which is the only reason most people stay on one.
Feel it, or it's on us.
Give it 60 days. If you're not sold we'll refund your first bottle, and you won't need to post it back.
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