Step 1Part your hair
Start where it looks thinnest: your part, crown or hairline.
DERMATOLOGIST APPROVED
Trsuted by hair experts worldwide
Based on Korean Beauty Innovation
Rated 4.8 · 250,000+ Sold
Korean Peptide Scalp Threading Technology
Scalp Threading Serum
Inspired by Korean scalp care, this formula delivers PDRN, fermented red ginseng, peptides, and caffeine to your roots—suppressing DHT and promoting regrowth for thicker, fuller hair with zero grease.
- Healthier-looking scalp
- Stronger-looking roots
- Fuller, thicker-looking hair
- Brush-on, no dropper
- Weightless, never greasy
- Gentle & cooling effect
Try Second Spring for 60 days, risk free
Use it daily and see what Scalp Threading can do for your hair. If you don't see or feel a difference, contact us for a full refund.
What Makes Scalp Threading Different?
Oils and most serums sit on the surface of your scalp. Second Spring's 220,000 micro-spicules open tiny channels as you brush it on, so fermented red ginseng, PDRN, caffeine and niacinamide reach the root instead of sitting on top.
How Do I Use It?
Once a day, brush it along your part and anywhere your hair looks thin. Massage for 30 seconds and leave it in. It dries in minutes, so you can style as usual.
Is It Gentle On A Sensitive Scalp?
Yes. It has a gentle & cooling effect: a light tingle for a few minutes while the spicules work, and it fades quickly. If your scalp is very sensitive, patch test behind your ear first.
Do I Need To Wash It Out?
No. It's weightless and leave-in. No residue, no flat roots, no extra wash day.
- Fast, tracked shipping
Scalp Threading Serum
$39.99
Real Results From Women Like You
10,746+ Reviews
“I noticed my part getting wider over the last couple years and it made me so self conscious I was using root spray powder just to leave the house. After about 3 weeks with this serum my part started narrowing back up and I could actually style my hair down without worrying. The little spicules feel tingly but it’s worth it, my hair genuinely looks fuller now.”
“I’ve spent hundreds on biotin, rosemary oil, collagen powders — none of it did anything real. This was different. By week two the shedding slowed down noticeably and by week four my ponytail felt thicker in my hand. My stylist asked me what I changed and that’s when I knew it wasn’t just in my head.”
“I’m 52 and after menopause my hair just gave up on me. Thin, flat, could see my scalp through the top in every photo. I’ve been using this for about 5 weeks and my crown area is filling back in — like I can actually see new little baby hairs growing in along my part line. I haven’t felt this good about my hair in years honestly.”
The root cause
Why Your Hair Keeps Thinning After 40
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1
DHT shrinks the root. As estrogen drops after 40, DHT gets more say over your follicles. They shrink and grow thinner, weaker-looking strands.
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2
Then your scalp hardens. The skin around those roots gets tighter and denser, like a lid sealed over each follicle.
-
3
So other products never get in. DHT shampoos, oils and drops sit on top of that hardened layer and wash away. They never reach the root where the thinning starts.
To reach the root, you have to get through the scalp first.
Every root, threaded on contact
Meet Scalp Threading. 220,000 Spicules From The Sea Sponge.
Scalp Threading gets through the hardened scalp. As you brush it on, 220,000 marine spicules open tiny pathways, so caffeine, fermented red ginseng and PDRN reach the root, right where DHT does its work. The gentle, cooling tingle is how you know it's getting in.
Opens The Hardened Scalp
220,000 micro-spicules open tiny pathways through the tight outer layer the moment you brush it on.
Reaches The Root
Caffeine, fermented red ginseng and PDRN follow those pathways down to the follicle, where DHT does its work.
Leaves Nothing Behind
It dries in minutes. Roots look lifted, with no grease and nothing to wash out.
What Opens The Way Today, & Feeds Your Roots For Tomorrow
220,000 Marine Spicules
Microscopic, needle-shaped crystals from the sea sponge. They open tiny pathways through a hardened scalp so everything else can reach the root. They're the gentle, cooling tingle you feel.
Fermented Korean Red Ginseng
A Korean beauty staple for centuries. Fermenting breaks it into smaller, gentler compounds that reach the root and revive the look of tired, thinning roots.
Caffeine
Threaded down to the follicle, right where DHT does its work, to wake up the scalp and give roots a stronger, lifted look.
Peptide Complex
Peptides support the scalp around each root, so strands look better anchored, fuller and thicker over time.
PDRN
The K-beauty favorite for skin renewal, now for your scalp. Helps a slower, older scalp stay healthy, balanced and comfortable.
Niacinamide
Soothes and balances the scalp, and keeps roots looking fresh instead of oily.
The Real-Results Breakdown
11,347+ Reviews
Based on a comprehensive anonymous customer survey, June 2026*
Fuller-looking part82%
Reported after 8 weeks of daily use
Roots Look Lifted91%
Noticed from the first week
No Greasy Roots95%
Compared with their usual scalp oil
Would repurchase86%
Based on survey responses
How to use
Brush. Tingle. Done. Under A Minute A Day.
Step 1
Step 2Brush it along the part
Glide the brush tip along your part. A gentle, cooling tingle is normal.
Step 3Massage for 30 seconds
Use your fingertips to work it into the scalp.
Step 4Leave it in
It dries in minutes. Style as usual, every day.
What to expect
From Your First Brush To Month Three
No overnight miracles, just what daily use looks and feels like.
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Week 1–2
The reset begins
- Scalp feels noticeably cleaner and lighter
- Less oily-looking roots between washes
- A cooling tingle as the spicules open the way in
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Week 3–6
Your scalp settles
- Scalp feels calmer, less itchy or tight
- Less breakage in your brush and on your pillow
- Roots look lifted instead of flat
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Week 6–10
Your part looks fuller
- Your part looks less see-through
- Hair feels thicker at the root
- More volume when you wear it down
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Month 3+
Your new normal
- Hair that looks fuller and healthier
- A one-minute ritual you keep every day
- Keep going to keep the results
Individual results vary. Second Spring is a cosmetic scalp serum, not a treatment for medical hair loss.
Why Your Scalp Needs More Than Another Oil
| Feature | 
| Rosemary oil | Biotin | Minoxidil |
|---|---|---|---|---|
| Goes straight onto your part with a brush | Yes | No | No | No |
| Opens micro-channels so actives reach the root | Yes | No | No | No |
| Weightless, no greasy roots | Yes | No | Yes | Often not |
| No strong smell | Yes | No | Yes | Varies |
| Nothing to wash out | Yes | No | Yes | Yes |
| You feel it working on day one | Yes | No | No | No |
| Fermented red ginseng, PDRN, caffeine and niacinamide | Yes | No | No | No |
Compares how each product is used and how it feels. Minoxidil is an FDA-approved drug; Second Spring is a cosmetic.
Try Second Spring For 60 Days, Risk Free
Use it every day for 60 days. If you don't love how your hair looks and feels, email us and we'll refund you in full. No hoops.
FAQ
Questions, Answered
Will it tingle?
Yes, a gentle, cooling tingle for a few minutes after you brush it on. That's the spicules opening the way. It fades quickly and never leaves your scalp sore.
Will it make my hair greasy?
No. It's a weightless, fast-drying serum made for fine hair. Your roots stay light and lifted.
Is it safe on color-treated hair?
Yes. It goes on your scalp, not your lengths. If you've just colored or had a chemical treatment, wait 48 hours before using it.
Can I use it with minoxidil or other treatments?
Second Spring is a cosmetic scalp serum, and many women use it alongside their routine. If you use minoxidil or any prescribed treatment, check with your doctor and apply them at different times of day.
How soon will I see a difference?
Roots look lifted from the first use. With daily use, most women notice a fuller-looking part in about two months. Results vary from person to person.
How long does one tube last?
About a month of daily use.
What if it doesn't work for me?
You're covered by our 60-day money-back guarantee. Email us and we'll refund you in full.