New Research
9 Out of 10 Pregnant Women Will Develop Stretch Marks. Here’s What a Clinical Study Found Can Help.
Researchers discovered that most stretch mark products never reach where stretch marks actually form. One clinically studied ingredient did. and the results changed everything.
The Numbers Nobody Talks About
According to the NHS, the British Journal of Dermatology, and multiple peer-reviewed studies, stretch marks during pregnancy are far more common than most women realize.
90%
of pregnant women develop stretch marks
75%
say permanence is their #1 concern
70%
use a product that sits on the surface and does nothing
A 2021 study from Michigan Medicine found that stretch marks cause pregnant women emotional distress comparable to conditions like acne, eczema, and psoriasis , impacting self-esteem, clothing choices, social activities, and even contributing to perinatal anxiety.
And yet, most women are still using products that were never designed to address the actual problem.
What Actually Causes Stretch Marks
(And Why Most Products Miss It Entirely)
Most people think stretch marks are a surface-level skin problem. They’re not. Here’s what’s really happening beneath your skin.
Epidermis
The surface layer. It acts as your skin’s shield. It also blocks most skincare products from getting any deeper.
Dermis. Where Stretch Marks Form
This is where elastic fibers live. They work like tiny rubber bands, letting your skin stretch and snap back. When your belly grows too fast, these fibers snap, tearing the skin from the inside out.
Hypodermis
The deepest layer. Regulates temperature and protects organs.
Here’s the problem: Most belly butters, oils, and creams sit on the epidermis. They feel nice. They smell good. But they never reach the dermis where the damage actually happens.
They moisturize the surface. That’s it.
Meanwhile, the elastic fibers in your dermis are snapping one by one, forming permanent scars that no amount of cocoa butter will ever fix.
Surface Moisture vs. Deep Skin Support
Other Creams
Belly Bloom Serum
What Researchers Found Actually Works
After decades of inconclusive research on belly butters and oils, scientists identified one natural ingredient that could actually reach the dermis and support the elastic fibers where stretch marks form.
Centella Asiatica (also known as Gotu Kola), a medicinal plant that has been used for centuries in traditional wound healing. But unlike folk remedies, this one has clinical data behind it.
Published research shows that Centella Asiatica:
• Reduces extracellular matrix degradation
• Increases elastin production in the dermis
• Restores collagen fiber organization
• Boosts microcirculation in stretched skin
Source: MDPI Cosmetics Journal, 2024 . “The Natural Centella asiatica Extract Acts as a Stretch Mark Eraser: A Biological Evaluation”
In other words, it doesn’t just moisturize the surface. It supports the actual structural components of your skin that stretch marks destroy.
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The Clinical Study That Changed Everything
In a double-blind clinical trial, 80 pregnant women were split into two groups. One received a cream with Centella Asiatica. The other received a placebo.
Placebo Group
56%
developed stretch marks
Centella Asiatica Group
34%
developed stretch marks
Published in Cochrane Database & British Journal of Dermatology
Among the sub-group of women who were already predisposed to stretch marks:
89%
did not develop new stretch marks with Centella Asiatica.
In the placebo group? Every single woman did. (p = 0.0001)
But Here’s What Most Brands Won’t Tell You
Many skincare products now list Centella Asiatica on their labels. But there’s a catch.
Most formulations contain only 1–2% Centella Asiatica, diluted in 98% water and glycerin. That’s like putting a drop of espresso in a swimming pool and calling it coffee.
The clinical studies that showed real results used concentrated Centella Asiatica extract. not a token amount buried in the ingredient list.
It’s Not Just About Skin. It’s About How You Feel.
A 2021 study from Michigan Medicine surveyed 116 pregnant women about the emotional impact of stretch marks. The findings were striking:
75%
said permanence of stretch marks was their #1 physical concern
38%
reported significant embarrassment and self-consciousness
1 in 4
said stretch marks caused as much distress as acne or psoriasis
1 in 7
women experience perinatal anxiety. stretch marks may contribute
Pregnancy should be a time of confidence and joy. not anxiety about your skin.
“But My Mom Got Them. Doesn’t That Mean I Will Too?”
Genetics do play a role. Family history is one of the strongest predictors of stretch marks. If your mother had them, your risk is higher.
But genetics determine the baseline elasticity of your skin fibers. They don’t determine whether those fibers get support during the months of rapid stretching.
Think of it this way: some people are genetically more prone to cavities. That doesn’t mean brushing your teeth is pointless. It means prevention matters even more.
The clinical study showed that Centella Asiatica was most effective precisely in the sub-group of women who were already predisposed. reducing new stretch marks from 100% to just 11% (p = 0.0001).
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What Real Moms Are Saying
34 Weeks. Not a Single Mark.
I’ve used one full bottle and just ordered my second. 34 weeks in with zero stretch marks. My sister used a popular butter during her pregnancy and got them by week 24. Wish she’d tried this instead.
Switched From Palmer’s. Night and Day.
Used Palmer’s Cocoa Butter my first pregnancy. Got stretch marks by week 28. Second pregnancy I switched to Belly Bloom from month one. I’m at 36 weeks and completely smooth. I only wish I’d found it sooner.
The Itching Stopped in 3 Days
My belly was so itchy I couldn’t sleep. Started Belly Bloom and the itching was gone within days. The serum is lightweight, absorbs instantly, and doesn’t stain clothes. Absolute lifesaver during third trimester.
My Midwife Asked What I Was Using
At my last checkup my midwife commented on how elastic and healthy my belly skin looked and asked what product I was using. She said she’d start recommending it. That’s the best review I could give.
Second Pregnancy, Zero Marks Again
Used Belly Bloom during my first pregnancy with amazing results. Now 30 weeks into my second and ordered the 3-pack immediately. My skin feels even better than last time. Would never use anything else.
How Are We Different?
Belly Bloom Serum
- Concentrated Centella Asiatica + Triple HA
- Absorbs deep into the dermis
- Supports collagen & elastic fibers
- 100% clean, pregnancy-safe
- Handcrafted in small batches
Standard Creams & Butters
- Mostly water, glycerin & fragrance
- Sits on the surface of the skin
- No clinical data on prevention
- May contain parabens & synthetics
- Mass-produced, low quality control
Still Have Questions?
Every Week You Wait Is a Week
Your Skin Stretches Without Support
Clinical research shows that early prevention with the right ingredients makes the biggest difference. Give your skin the support it needs, risk-free for 100 days.
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