Syntro Hair Growth Roll-On Serum

If you're finding more hair on your pillow, in your brush and in the shower drain, if your part is getting wider or your hairline and temples are creeping back, if your crown looks thin in photos taken from above, or if pregnancy, menopause or a stressful year has left your hair thinner than it used to be — this was made for you. Men and women, every hair type.

It's not your hair. It's your roots. Thinning usually starts at the scalp: follicles slipping into a resting phase too early, and hairs letting go before their time. That's where anything you use has to work, and it's exactly where most products never reach.

Shampoos rinse off in a minute. Oils and dropper serums sit on the hair, look greasy for an hour and wash away. Hair pills and vitamins are a long way from your scalp. This rolls four targeted actives straight onto the scalp, at the root, in 30 seconds.

Made for people who want less shedding and fuller-looking hair, without a messy routine they'll quit in two weeks.

Six jobs, each one mapped to a real reason hair thins. Not another oil. Not a dropper that drips on your forehead.

1. Less shedding. Diaminopyrimidine oxide (2%) helps keep the root anchored, so the hairs you have stay put longer.

2. Waking resting follicles. A larch & green tea complex (3%) targets the root to help follicles back into their growth phase.

3. Growth signals at the root. Pea sprout extract (2%) supports the signals that tell follicles to grow, working on the follicle, not just the strand.

4. A healthy scalp. Rosemary leaf extract (3%) supports scalp circulation and a fresh, balanced scalp — at a full 3%, not a trace.

5. Getting it to the root. The steel rollerball parts the hair and presses the serum onto the scalp, massaging it in as it rolls.

6. A routine you'll actually keep. Light, fast-absorbing and non-greasy, with no rinse: 30 seconds, morning and night, then style as usual.

Every hair grows in cycles: a growth phase, a short transition and a resting phase before it sheds. When more follicles drift into rest and hairs loosen early, you see it as shedding, a wider part and thinner-looking hair. Thinning isn't on the strand. It starts at the root.

What's actually happening:
Follicles spend longer resting → fewer hairs growing at any one time.
The tissue around the root stiffens → hairs loosen and shed early.
Stress, hormones, pregnancy and age speed both up → shedding you can see in the drain.

Why what you've tried hasn't fixed it:
Shampoos and conditioners rinse off before anything can work.
Oils and dropper serums coat the hair, look greasy and wash away, so little reaches the scalp.
Hair pills and vitamins are a long way from your scalp.
"Proprietary blends" rarely tell you how much of anything is in there.

How the Syntro Roll-On works differently. It puts the actives where follicles live:

✓ Rosemary leaf extract 3% — supports scalp circulation and a healthy scalp.
✓ Larch & green tea complex 3% — helps resting follicles back into their growth phase.
✓ Pea sprout extract 2% — supports growth signals at the root.
✓ Diaminopyrimidine oxide 2% — helps keep the root anchored, so hair sheds less.
✓ A steel rollerball — parts the hair and massages the serum onto the scalp as it rolls.

Roll it on, massage for 30 seconds, leave it in. Twice a day. That's it.

Here's what customers typically report. Hair grows on hair's schedule, so changes build gradually — give it two to four weeks for the first ones, and two to three months for the full picture.

Days 1–14 — the groundwork phase. The actives reach the root twice a day. Your scalp feels calmer and fresher, with no greasy film. No visible change yet — and anyone promising one this fast isn't being straight with you.

Weeks 2–4 — the drain-test phase. Fewer strands on the pillow, in the brush and in the shower drain. Roots feel more anchored when you brush.

Weeks 4–8 — the baby-hair phase. Fine new hairs may appear along the part and hairline. Hair looks thicker and has more body. This is when most people start taking photos.

Days 60–90 — the compounding phase. New growth thickens and blends in, density keeps building month on month, and shedding stays down.

Hair keeps cycling, so the support has to keep going too. That's why most customers keep using it past the first bottle — and why the 3-bottle option, a full 90 days, is the most popular.

Use it twice a day, morning and night, on a clean, dry or towel-dried scalp. Twist off the cap and roll the steel ball along your part lines, hairline, temples and crown with short strokes. Massage with your fingertips for about 30 seconds, then leave it in — no rinsing. Style as usual once it's absorbed.

Each 25 ml bottle lasts about 30 days. Consistency is what makes the difference: many people notice less shedding within 2–4 weeks, baby hairs within 4–8 weeks and fuller-looking hair over 60–90 days. Close the cap after use and store below 25 °C.

This is a cosmetic product for external use only. Do a patch test on your inner arm 24 hours before first use. Avoid the eyes; if contact occurs, rinse with water. Don't apply to broken or irritated skin, and stop if irritation occurs. If your hair loss is sudden, patchy or painful, if you have a scalp condition, or if you're pregnant or breastfeeding, talk to your doctor first.

Orders leave our warehouse within 1 business day and most arrive in 3 to 5 business days. You'll get a tracking number by email the moment it ships. Free shipping on every order — your price at checkout is the final price.

Covered by our 90-day money-back guarantee. No return required, no questions asked.