Linda, 52
Verified purchase
“My part was getting wider every year and I'd stopped wearing my hair up. Eight weeks of rolling this on at night and my hairdresser asked what I'd changed.”
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Rosemary Hair Thickening Roll-On Serum
Thicker-looking hair in 6 to 8 weeks
Less shedding from breakage
1 minute a day, no rinsing, no grease
Order today and it ships by the next business day
Free shipping on orders over $45. 60-day money-back guarantee.
Shipped today🇺🇸|Free shipping to US
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Due to high demand, quantities are limited.
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60-day money-back guarantee
Try it worry-free. If your hair doesn't look fuller in 60 days, you'll get your money back.
- Ships fast
- 60-day guarantee
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Trusted by 10,000+ customers
60-day guarantee
Use it every day for 60 days. If your hair doesn't look fuller, email us and we'll refund you. No hoops.
How it works
Thinning starts at the scalp. The roller tip puts five actives straight onto the skin where hair grows, instead of on your lengths where a shampoo or oil ends up. They feed the roots, keep the scalp clean and calm, and strengthen strands so they stop snapping.
Is it safe?
Yes, for daily use on all hair types, including color-treated hair. The menthol tingle fades in a few minutes. Patch test first if your skin is sensitive, and skip broken or irritated skin.
Shipping & returns
Every order ships with tracking. Returns are covered by the 60-day money-back guarantee.
Ingredients
Rosemary oil, biotin, caffeine, niacinamide, adenosine, menthol, amino acids. No parabens, sulfates or silicones. Full list on the box.
Loved by 12,000+
Danielle, 34
Verified purchase
“Lost so much hair after my second baby. The shedding slowed down in about three weeks and the baby hairs along my hairline are finally filling in.”
Marcus, 41
Verified purchase
“Was about to give up and shave it. My temples look thicker in photos now and it's not greasy at all, I use it every morning.”
Priya, 29
Verified purchase
“No mess, no oily roots, I just roll it on before bed. Way less hair in the shower drain after a month.”
What it does
Thicker Hair Starts at the Root
Thickens thinning areas
Feeds the roots along your part, crown and hairline so hair grows in looking fuller and denser.
Stops the snapping
Stronger strands break less, so less hair ends up in your brush, the drain and on your pillow.
Clears the build-up
Keeps the scalp clean, calm and balanced, so it can grow its best hair. Cool and fresh on contact.
What's inside
5 Scalp Actives in One Roll-On
Rosemary Oil
Wakes up the scalp and supports thicker growth.
Biotin
Supports keratin, the protein your hair is made of.
Caffeine
Energises tired roots.
Niacinamide
Strengthens and calms the scalp.
Adenosine
Helps hair look thicker and denser.
How to Use
Part your hair where it's thinning
Roll onto the scalp and massage in
Leave in. Use once or twice a day
Why it works
Made to Work Where Hair Grows
5
scalp actives in every roll
1 min
a day, straight onto the scalp
0
rinsing, grease or mess
Why people switch
Hearth vs. Thickening Shampoo
Hearth
Shampoo
Stays on the scalp and keeps working
✓
✕
Targets your thin spots
✓
✕
5 actives at the root
✓
✕
Non-greasy, no rinsing
✓
✕
60-day money-back guarantee
✓
✕
What to expect
Your First 60 Days
-
Day 1
A fresh, clean scalp
Cool tingle the moment it goes on. Light, never greasy.
-
Weeks 2–4
Less hair in the drain
Strands stop snapping, so you see less hair in your brush and shower.
-
Weeks 6–8
Fuller-looking hair
Your part looks narrower and hair feels thicker at the root.
-
Day 60
Your call
Keep going if you love it. If not, you're covered by our guarantee.
Loved by 12,000+ people with thinning hair
Reviews
What People Are Saying
4.8
Based on 1,284 reviews
Jess MorenoVerified buyer
ok I was skeptical bc I've tried basically everything from the drugstore. week 5 now and my part doesn't look as see-through in photos?? my hairdresser asked what I changed lol
👍❤️48Danielle PriceVerified buyer
The roller tip is honestly the best part. No mess, no oily roots, I just do it before bed and forget about it.
👍❤️21Mark WhitfieldVerified buyer
Bought it for my wife and ended up stealing it. Temples look a bit fuller, nothing crazy but I can see it. Reordering.
👍❤️33Priya ShahVerified buyer
Smells kind of minty-herbal and the tingle is so satisfying. Way less hair in my shower drain after about a month, which was the whole reason I got it.
👍❤️57Kelsey HartVerified buyer
my hair got SO thin after having my son 😭 been using this every night and my hairline looks way fuller in photos now
👍❤️99Rachel KimVerified buyer
Got the buy 2 get 1 and glad I did, you really do need to stick with it. My hair feels fuller when I blow dry it now.
👍❤️14Brian OrtegaVerified buyer
Not an overnight thing, don't expect that. But by week 7 my crown looks thicker under the bathroom light, which is the worst lighting lol
👍❤️29Lauren MitchellVerified buyer
I color my hair every 6 weeks and no issues at all, didn't fade or mess with my color.
👍❤️9Tonya BrooksVerified buyer
Shipped fast. 3 weeks in, too early to say much on thickness but my scalp feels so much less itchy and flaky.
👍❤️7Fuller Hair in 60 Days, or Your Money Back
Use it every day for 60 days. If you don't see fuller-looking hair, email us and we'll refund every cent. Fast refunds, no forms, no return shipping.
Clean formula
Nothing Your Scalp Doesn't Need
No parabens, sulfates or silicones
Nothing that clogs the scalp or weighs hair down.
Safe for color-treated hair
Use it on dyed, bleached and chemically treated hair.
For men and women
All hair types and textures, straight to coily.
Questions
Everything You Need to Know
How long until I see results?
Less shedding in the first few weeks and fuller-looking hair around weeks 6 to 8 of daily use. Hair grows slowly, so stick with it.
How do I use it?
Part your hair, roll the tip along the thin area and massage in for a minute. Leave it in. Once or twice a day.
Does it work for men and women?
Yes. A widening part, thin crown or receding temples, it's made for all of them.
Will it make my hair greasy?
No. It's light and absorbs fast. Use it at night or before you style.
Does it tingle?
A little. The menthol gives a cool, fresh feeling that fades after a few minutes.
Can I use it on color-treated hair?
Yes, it's safe for dyed, bleached and treated hair.
How long does a bottle last?
About a month at once a day.
Can I use it with other hair products?
Yes. Apply it to a clean scalp first, let it absorb, then style as usual.
What if it doesn't work for me?
Email us within 60 days and we'll refund you in full.
Rosemary Hair Thickening Serum$29.99
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