Our evidence here is our own clinical study of our liquid marine collagen, in which imaging showed a visible reduction in spots, pigmentation and redness.
- Who and how long. 10 women drank it daily for 8 weeks, with skin imaging before and after.
- What changed in the images. Spots, pigmentation and redness were visibly reduced, and skin texture improved.
- What you can check. The cheek imaging pair from that study is printed on this page.
of the 106 women in our user trial felt the appearance of their skin improved after 8 weeks of our liquid marine collagen.
- 89%reported more moisture and glow
- 87%noticed fewer fine lines and wrinkles
- 81%reported firmer skin
Does collagen help uneven skin tone?
Our own clinical study points to yes: after 8 weeks of our liquid marine collagen, imaging showed a visible reduction in spots, pigmentation and redness, and improved skin texture.1
The rest of the page builds on that finding. The study put spots, pigmentation and redness under a camera, and what follows explains the study, shows you a picture from it, and adds what a larger group of women said about their skin in the mirror.
What was the clinical study?
The clinical study was a small imaging study in which 10 women took our liquid marine collagen every day for 8 weeks, with their skin analysed by imaging before and after.1
- Who. 10 women.
- What they took. Our liquid marine collagen, daily.
- How long. 8 weeks.
- How the change was recorded. Skin imaging before and after.
With imaging, a before image and an after image of one cheek can sit side by side. The study sits beside a second, larger one, and how our collagen is tested sets out the pair in full.
What did the imaging show?
After 8 weeks of daily intake, the imaging showed a visible reduction in spots, pigmentation, redness and wrinkles, and improved skin texture.1
What the skin imaging showed after 8 weeks
Clinical study of our liquid marine collagen: 10 women, daily intake, imaging before and after.
| What was imaged | What the imaging showed |
|---|---|
| Spots | A visible reduction |
| Pigmentation | A visible reduction |
| Redness | A visible reduction |
| Skin texture | Improved |
| Eye wrinkles and forehead wrinkles | A visible reduction |
The study produced pictures as well as findings. The pair below is the cheek image from it, labelled before and after. Look at the left half first, then the right.
Clinical study of 10 women after daily intake of our liquid marine collagen for 8 weeks. This is what it looked like for a woman in our study.
The imaging showed a visible reduction in spots, pigmentation and redness over the same 8 weeks, with improved skin texture alongside.1
The same study also produced eye and forehead images. You can see every pair together on our collagen before and after page.
assets/img/blog/tn-cheek.webpWhat did 106 women report about how their skin looked?
In a separate 8-week user trial, 95% of 106 women felt the appearance of their skin improved, and 89% reported more moisture and glow. They took our liquid marine collagen daily and then answered questions about what they had noticed.1
The user trial asked about appearance, moisture and glow. Those answers are shares of the 106 women, and each keeps the verb the women responded to.
felt the appearance of their skin improved.
reported more moisture and glow.
found it easy to include in their daily routine.
Of the 106 women, 95% felt the appearance of their skin had improved.1
Women in that trial were photographed too, and two of the pairs are below.
Participants in the 8-week user trial of our liquid marine collagen, photographed before and after. Figures are the share of the 106 women in that trial who gave each answer.
On timing, the trial has one general reading for you. The women reported visible results in as little as 4 weeks, with further improvement by week 8.1 That reading covers the trial as a whole.
What have women written about their skin?
Women have written about glowier, more even and more radiant skin on marine collagen, and a buyer of ours can see visible changes in her skin. Two published first-person accounts follow, with that buyer's review.
“To my surprise, these worked.”
After around six months on 10,000 mg of marine collagen a day she reported glowier, more even skin that held on to hydration for longer.
Charlotte BitmeadWriting in Stylist2
“And truthfully? My skin looks better than ever.”
A self-confessed sceptic, she took marine collagen every day for two months and found her skin plumper, healthier and noticeably more radiant.
Shannon LawlorBeauty editor, writing in Marie Claire UK3
“I can really see the visible changes in my skin and nails.”
★★★★★
Check4YouVerified purchase · Amazon, Germany · 27 December 2023
Independent first-person accounts of marine collagen published by the outlets named, and a verified buyer review of our liquid marine collagen as sold under our manufacturer's own label.
Which nutrients in Core™ have skin claims?
In Core™, vitamin C and biotin hold wording on the EU list of permitted health claims that names skin, and vitamin C and selenium hold wording that names cells.4 These sentences belong to the nutrients, one nutrient at a time, and we print them word for word.
Collagen formation for skin
Vitamin C contributes to normal collagen formation for the normal function of skin.4
EU list of permitted health claims · 150% NRV per portion
Normal skin
Biotin contributes to the maintenance of normal skin.4
EU list of permitted health claims
Protection of cells
Vitamin C contributes to the protection of cells from oxidative stress.4
EU list of permitted health claims
Protection of cells
Selenium contributes to the protection of cells from oxidative stress.4
EU list of permitted health claims · 50% NRV per portion
Read the cards as four separate statements. The first two name skin, and the last two name cells in general, which is the list's own choice of word. The NRV percentages on the cards are from the product specification, and NRV is a labelling reference.1
Vitamin C is at home in skin. A 2017 review of vitamin C in skin compiled published tissue measurements, and the authors reported about 6 to 64 mg per 100 g wet weight in the epidermis and about 3 to 13 mg per 100 g in the dermis.5 Those are ranges for human skin in general. Our page on antioxidants for skin takes the cell-protection wording further.
How do you take it?
- One portion a day. Shake the pack, pour into the cap and drink it straight, or stir it into water or a smoothie.
- What is in the portion. Core™ gives you 11,000 mg of hydrolysed marine collagen, types I and III, with a natural berry flavour. It is sugar free and fat free.
- Daily, for the length of the studies. Both studies of our liquid marine collagen were built on daily intake for 8 weeks.
- Storage. Keep the pack in the fridge once opened.
Questions about collagen and skin tone
Does collagen help dark spots?
In the clinical study of our liquid marine collagen, imaging showed a visible reduction in spots, pigmentation and redness after 10 women took it daily for 8 weeks. The cheek image from that study is shown above.
Does collagen help pigmentation and redness?
In our clinical study, imaging showed a visible reduction in pigmentation and in redness, and improved skin texture, after 8 weeks of daily intake of our liquid marine collagen.
How long did the women in the study take collagen?
The women in the clinical study took our liquid marine collagen every day for 8 weeks. Their skin was analysed with imaging before and after. The larger user trial of 106 women also lasted 8 weeks.
Did women notice a difference in the mirror?
In the user trial, 95% of 106 women felt the appearance of their skin improved after 8 weeks on our liquid marine collagen. 89% reported more moisture and glow.
Which nutrients in Core™ have skin claims?
Vitamin C and biotin are the nutrients in Core™ with skin claims. Vitamin C contributes to normal collagen formation for the normal function of skin. Biotin contributes to the maintenance of normal skin.
How much Core™ do I take each day?
Take one portion of Core™ each day. Shake, pour into the cap and drink it straight or stirred into water or a smoothie.
