SPONSORED CONTENT · Published by Striā Lab · Comparison based on publicly available product information and independent review consensus

The 2026 Comparison Report

We compared the UK's 4 most popular stretch mark treatments. One was in a different category.

Bio-Oil. Palmer's Cocoa Butter. Mederma Stretch Marks Therapy. Striā Lab's 12-Week Programme. Tested against five honest criteria, with a particular focus on the women now searching for answers after GLP-1 weight loss (Ozempic, Wegovy, Mounjaro).

Treatments compared

Criteria scored

Winner that wasn't close

Striā Lab 12-Week Repair Programme, cream, serum and microneedling tool

How we judged

Five criteria. Chosen for honesty, not flattery.

Stretch marks are not a hydration problem. They are a structural problem in the dermis, where collagen and elastin fibres have been damaged. So we judged each treatment on what actually matters: whether it can reach and repair the structural source, not just hydrate the surface.

Mechanism

Does it address the underlying collagen and elastin damage, or only hydrate the surface?

Clinical evidence

Is the core ingredient backed by published, peer-reviewed research?

Protocol

Is it a structured treatment programme, or a single daily moisturiser?

Documented results

What does verified consumer outcome data show?

Guarantee

Does the brand stand behind the product with a meaningful guarantee?

The result at a glance

The full side-by-side.

Scroll the table sideways on mobile to see the full comparison.

	WINNER Striā Lab 12-Week Programme	Mederma Stretch Marks Therapy	Bio-Oil Skincare Oil	Palmer's Cocoa Butter Formula
Mechanism	3-step structural protocol: topical TECA, weekly serum, weekly microneedling	Single topical with allantoin and cepalin (onion bulb extract)	Single topical, mineral-oil based moisturiser with botanical extracts	Single topical, cocoa butter moisturiser with vitamin E and elastin
Clinical evidence	TECA peer-reviewed for stretch marks. Microneedling published as collagen induction therapy.	Allantoin has documented scar use. Limited published evidence specifically for stretch marks.	Brand-funded studies show ~50% of users see no improvement at 8 weeks.	No published clinical evidence for stretch mark reduction. Positioned as preventive.
Protocol	Structured 12-week routine. Daily cream + weekly serum + weekly microneedling.	Single product. Twice-daily massage.	Single product. Twice-daily massage.	Single product (or range). Daily moisturising.
Documented results	87/80/77% visible improvement (n=30 survey). 4.56/5 from 465 verified reviews. 25 industry awards.	Mixed consumer reviews. No published efficacy survey.	Mixed reviews. 17% reported no benefit in 2018 study. Widespread "didn't work" feedback online.	Mixed reviews. Many users report stretch marks formed despite consistent use.
Guarantee	12-week money-back guarantee (on completion of full Programme)	None specified beyond standard retailer returns	None specified beyond standard retailer returns	None specified beyond standard retailer returns
Overall	★★★★★	★★★☆☆	★★★☆☆	★★☆☆☆

The full breakdown

Each treatment, fairly assessed.

#1 WINNER Striā Lab 12-Week Programme HIGHEST OVERALL SCORE

Striā Lab 12-Week Programme

The clinical-style at-home protocol

Striā Lab is the only brand in this comparison treating stretch marks as the structural skin problem they actually are. The 12-Week Programme combines three components, each with a different job. The Redefining Cream (0.5% TECA, 5% Actigym, 3.8% peptide complex) is applied twice daily to support the appearance of stretch marks at the surface. The Cellular Repair Serum (TECA, triple hyaluronic acid, hydrolysed collagen) is applied once a week to nourish post-treatment skin. The 1.5mm Microneedling Tool, used once weekly with light pressure, triggers the skin's own collagen induction response.

It is the same dual-mechanism approach used in professional clinical protocols, packaged for at-home use across 12 weeks. The combination matters: topical TECA is supported by peer-reviewed research for stretch mark improvement, and microneedling is one of the most studied non-invasive skin remodelling treatments in modern dermatology.

Mechanism 5/5 Evidence 4/5 Protocol 5/5 Results 5/5 Guarantee 4/5

Verdict: The only entry that treats stretch marks as a structural skin problem rather than a hydration problem.

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Mederma Stretch Marks Therapy

The scar-care brand's stretch mark cream

Mederma comes to stretch marks from a long history in scar care, which gives the brand more clinical credibility than the supermarket creams. The Stretch Marks Therapy is positioned as a treatment rather than a moisturiser, with allantoin and cepalin (onion bulb extract) as its hero ingredients. There is some published evidence for allantoin in scar appearance.

The honest limitation: it is still a single topical product. There is no microneedling, no structured protocol, no weekly stimulation of the dermis. For surface-level improvement on newer marks, it has a chance. For the structural deflation that follows rapid weight loss, a topical alone is not enough.

Mechanism 3/5 Evidence 3/5 Protocol 2/5 Results 3/5 Guarantee 2/5

Verdict: A step up from a basic moisturiser. Still a single-product topical in a category that needs more.

Bio-Oil Skincare Oil

The bottle in most UK bathrooms

Bio-Oil sits in millions of UK bathrooms. It is affordable, widely available, and pleasant to use. As a body oil for general skin softness, it works exactly as designed. As a stretch mark treatment, the picture is more complicated. Bio-Oil's own clinical study showed that only 50% of users saw improvement at 8 weeks, meaning half saw none. A separate 2018 study of 80 people with scars and stretch marks reported that 17% saw no benefit.

The base ingredient is mineral oil, which does not penetrate to the dermal layer where stretch marks form. It is also formulated with retinol, which is generally not recommended for pregnancy use, despite the product's pregnancy positioning.

Mechanism 2/5 Evidence 3/5 Protocol 2/5 Results 3/5 Guarantee 2/5

Verdict: A pleasant body oil. Bio-Oil's own studies show that for half of users, it does not work as a stretch mark treatment.

Palmer's Cocoa Butter Formula

The high-street classic

Palmer's is the cocoa butter cream most British women grew up with. It is affordable, easy to find, and undeniably comforting to apply. The brand positions the Cocoa Butter Formula primarily as a preventive moisturiser for use during pregnancy. That is roughly the scale of its ambition.

Customer reviews repeatedly tell the same story: women who used Palmer's religiously throughout pregnancy and still developed stretch marks. The formula contains cocoa butter, vitamin E, and elastin, which moisturise pleasantly. None of the ingredients in the standard formula are independently validated to rebuild the collagen and elastin damage that stretch marks represent.

Mechanism 2/5 Evidence 2/5 Protocol 2/5 Results 3/5 Guarantee 2/5

Verdict: A pleasant high-street moisturiser at a budget price. Not designed to treat established marks.

The honest synthesis

Why the winner wasn't close.

Three of these products are moisturisers with slight differences in ingredient profile. One is a treatment programme. That distinction is the whole story.

Stretch marks form when collagen and elastin fibres in the dermis are stretched faster than they can repair themselves. They are not a dryness problem. They are a structural problem. Solving structural problems requires structural intervention, not surface lubrication.

Bio-Oil, Palmer's, and Mederma all sit at the surface of the skin. Striā Lab's 12-Week Programme is the only entry that combines a published-research-backed topical (TECA / Centella Asiatica) with weekly microneedling, the same collagen induction mechanism used in professional clinics. That is why it scored 5/5 across every criterion. It is the only product in the category actually designed for the job.

For the post-GLP-1 body specifically

Why the gap matters more than ever.

The women now searching for stretch mark solutions in the largest numbers are women who have lost significant weight on GLP-1 medications (Ozempic, Wegovy, Mounjaro). Their skin has been deflated faster than collagen can remodel. Dermatologists call it the Velocity Gap.

For this body, the comparison is even less close. A moisturiser was never going to repair structural changes happening underneath the surface. A protocol that combines collagen-supporting topicals with weekly collagen induction, used consistently across 12 weeks, is the only option in this comparison built for the actual biology.

If you've done the hard work of changing your body, you've earned the protocol designed to finish it.

Recognised by the industry

20+ industry awards. And counting.

The most-awarded stretch mark brand in the UK, recognised across beauty, parenting and clinical categories.

2026 · GOLD WINNER

Best Targeted Body Treatment

2026 · FINALIST

Standout Bodycare Product

2025 · WINNER

Best Stretch Mark Skincare Company

2025 · GOLD

Best Stretch Mark Product

2025 · GOLD

Best Vegan Body Product

2025 · SILVER

Best Body Oil

2024 · PLATINUM

Best Postpartum Skincare

2024 · EDITOR'S CHOICE

Best Stretch Mark Cream

What the winner's customers saw

12 weeks. Real bodies. Real results.

87%

saw visible improvement

80%

saw lighter colour

77%

saw reduced depth

Based on a 30-participant consumer survey for the Striā Lab 12-Week Programme. Outcomes are self-reported.

Striā Lab Programme before and after, abdomen — BEFORE / AFTER · VERIFIED

Striā Lab Programme before and after, stomach — BEFORE / AFTER · VERIFIED

Striā Lab Programme before and after, hip — BEFORE / AFTER · VERIFIED

Striā Lab Programme before and after, thigh — BEFORE / AFTER · VERIFIED

The offer

The winner.

The full 12-Week Programme delivered fresh each month, cream, serum and microneedling tool, with a free gift and a 12-week money-back guarantee.

£39.99 / month £94.97 Save 57%

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Free shipping · 12-week guarantee · 4.56/5 from 465 reviews · 25 industry awards

Includes

✓The full 3-product system: Cream, Serum, and 1.5mm Microneedling Tool
✓Free Collagen X Mini gift (worth £15) with your first delivery
✓Monthly resupply with replacement roller head
✓Free shipping on every order
✓12-week money-back guarantee (after completing the full Programme)
✓Pause, skip, or cancel anytime

The rest of what people ask

Comparison FAQ.

Can I use Bio-Oil, Palmer's, or Mederma alongside the Programme?+

You can, but you don't need to. The 12-Week Programme is designed as a complete protocol. Adding extra topicals will not improve results and may interfere with the dermis-level absorption the microneedling step enables.

Why is the Programme more expensive than the others?+

It includes three products designed to work as a system, with weekly use of a microneedling device, ongoing monthly resupply, and a 12-week money-back guarantee. A single in-clinic microneedling session costs £150 to £400. The Programme is your complete at-home protocol, monthly.

Is the microneedling safe to use at home?+

Yes, when used as directed. The 1.5mm tool is designed for at-home use with light pressure, once weekly. Full step-by-step guidance comes with your first delivery, alongside hygiene and skin-prep instructions.

Will the Programme work on older, silvery stretch marks?+

Newer (red, pink, raised) marks respond fastest. Older (white, silvery, flat) marks improve more gradually. The microneedling step is specifically designed for structural improvement of older marks where topicals alone struggle.

What if I'm pregnant or breastfeeding?+

The Cream and Serum are formulated without retinoids, parabens or phthalates and are suitable during pregnancy and breastfeeding. We recommend waiting until postpartum to begin the microneedling step.

One choice left

The Programme that actually finishes the job.

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