Root 1 Lash Growth Serum Prostaglandin-Free Lash Growth Serum
Root 1 Lash Growth Serum
Proud to Be...
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Ophthalmologist Reviewed
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Dermatologist Tested
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Clinically Tested
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Non-Irritating
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Hypoallergenic
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Made in USA
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Vegan Friendly
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Cruelty Free
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No Prostaglandins
A lash growth treatment serum with a difference.
Powered by RootBoost Technology: Clinically backed botanical, vitamin & peptide complex
Developed with Experts: Award-winning trichologists, dermatologists & Ophthalmologist tested
Root 1 delivers 4-in-1 results in 3-12 weeks:
- Encourages new lash growth
- Helps existing lashes grow
- Reduces brittleness by sealing in moisture
- Supports the lash cycle by extending the growth (anagen) phase
Most mainstream lash serums use prostaglandin analogues - hormone-like compounds originally found in glaucoma medication.
These can cause harmful side effects such as:
- Eyelid darkening
- Irritation and redness
- Orbital fat loss (sunken eyes)
- Iris color changes
They’re often hidden by brands under 15–20 confusing INCI names!
SOWN is 100% prostaglandin-free + hormone-free.
Safe for eyes, gentle on skin, and suitable for sensitive eyes + contact lens wearers.
Before
After 12 weeks
Before
After 8 weeks
Before
After 12 Weeks
Before
After 7 weeks
Before
After 3 weeks
Before
After 12 weeks
Before
After 12 weeks
Before
After 12 Weeks
Before
After 4 weeks
How to Use
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02.
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How It Works
Good to Know: Hair Growth Cycle
Healthy hair go through a constant natural cycle of growth (anagen phase), transition (catagen phase), resting (where new hairs start forming beneath the surface, also known as the telogen phase) and release (exogen phase, where old hairs shed to make way for new hairs.) Sown extends the growth (anagen) phase but where your individual hairs are in this cycle will determine how soon you see results. This is why some people might start seeing results in week 2, whereas others don't until week 8!
The Timeline
Weeks 1-2
Lashes grow in natural cycles,meaning not every follicle is active at the same time. Some lashes are already growing, while others are resting or shedding. Because of this, early changes can vary from person to person. Depending on where your lashes are in their cycle when you begin, some people may notice small new hairs appearing within the first couple of weeks, while others may simply see their existing lashes looking healthier and stronger. Consistency at this stage helps support follicles as they re-enter the active growth phase.
Week 2-4
By weeks 2-4, more follicles begin entering the active growth phase (anagen). As this happens, new lashes start to emerge along the lash line. You may begin to see shorter, finer hairs filling in areas that previously looked sparse. This stage is when early density improvements often become noticeable. Where you see the most growth depends largely on where your lashes were in their cycle when you started using the serum.
Weeks 4-8
As more follicles move into the active growth phase, new hairs continue to emerge while earlier regrowth becomes longer and fuller. By weeks 4-8 and beyond, lashes typically appear fuller, more even, and more defined across the lash line to look more 'fanned out'. Continued consistency allows more follicles to synchronise into the growth phase over time, helping density and length gradually build. To maintain this length and fullness, ongoing use is recommended. Because lashes naturally shed and regrow in cycles, stopping use means new lashes will eventually return to their natural baseline length over time. Unlike many lash serums that are formulated for short-term use, SOWN is designed to be gentle enough for twice-daily, long-term use - making it easy to incorporate into your everyday routine.
Weeks 1-2
Lashes grow in natural cycles,meaning not every follicle is active at the same time. Some lashes are already growing, while others are resting or shedding. Because of this, early changes can vary from person to person. Depending on where your lashes are in their cycle when you begin, some people may notice small new hairs appearing within the first couple of weeks, while others may simply see their existing lashes looking healthier and stronger. Consistency at this stage helps support follicles as they re-enter the active growth phase.
Week 2-4
By weeks 2-4, more follicles begin entering the active growth phase (anagen). As this happens, new lashes start to emerge along the lash line. You may begin to see shorter, finer hairs filling in areas that previously looked sparse. This stage is when early density improvements often become noticeable. Where you see the most growth depends largely on where your lashes were in their cycle when you started using the serum.
Weeks 4-8
As more follicles move into the active growth phase, new hairs continue to emerge while earlier regrowth becomes longer and fuller. By weeks 4-8 and beyond, lashes typically appear fuller, more even, and more defined across the lash line to look more 'fanned out'. Continued consistency allows more follicles to synchronise into the growth phase over time, helping density and length gradually build. To maintain this length and fullness, ongoing use is recommended. Because lashes naturally shed and regrow in cycles, stopping use means new lashes will eventually return to their natural baseline length over time. Unlike many lash serums that are formulated for short-term use, SOWN is designed to be gentle enough for twice-daily, long-term use - making it easy to incorporate into your everyday routine.
What makes us different
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SOWN
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Most Competitors | |
|---|---|---|
| No Hormones or Prostaglandins |
Yes
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No
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| Safe for Daily Use |
Yes
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No
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| Growth Guarantee |
Yes
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No
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| Free from 800+ harmful ingredients |
Yes
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No
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| Oil Free so safe to use with extensions |
Yes
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No
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| No Hormones or Prostaglandins | Safe for Daily Use | Growth Guarantee | Free from 800+ harmful ingredients | Oil Free so safe to use with extensions | |
|---|---|---|---|---|---|
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SOWN
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Yes
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Yes
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Yes
|
Yes
|
Yes
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| Most Competitors |
No
|
No
|
No
|
No
|
No
|
Regenerating RootBoost™ ingredients
Our RootBoost™ serums contain a powerful blend of botanicals including Ginseng, White Mulberry, Licorice, Red Clover and Pumpkin supercharged with vitamins B3, B5, B6, B7 (Biotin) C and E to promote healthier, stronger hair growth. A trio of peptides (amino acids) help seal in moisture to prevent shedding and brittleness. Most serums rely on synthetic shortcuts. We harness root botanicals, proven for centuries, and supercharge them with peptides and vitamins for visible, lasting growth.
No prostaglandins. No hormones. Just the proven power of roots.
On The Blog
T(hair)apy just for you
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The Lash Growth Cycle Explained
How Long Do Lashes Really Take to Grow?
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The Dangerous Side Effects of Prostaglandins in...
What the Beauty Industry Isn’t Telling You
LashesThe Dangerous Side Effects of Prostaglandins in...
What the Beauty Industry Isn’t Telling You
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Why Results Vary
Learn how the lash cycle works, why timelines vary, and how Root 1 supports growth at every stage.
LashesWhy Results Vary
Learn how the lash cycle works, why timelines vary, and how Root 1 supports growth at every stage.
