The 60-day collagen routine is a single portion of Core™ every day for 60 days. It runs just past 8 weeks, the length of our own user trial.
- Four steps a day. Shake the pack, pour into the cap, drink, then put the pack back in the fridge.
- Three phases. Weeks 1 to 4 build the habit, weeks 5 to 8 take you to the 8-week readings, and the last few days carry you past them.
- Daily, for 8 weeks. Our own user trial of 106 women followed this pattern with our liquid marine collagen.
of 106 women found our liquid marine collagen easy to include in their daily routine during an 8-week user trial.
- 95%felt the appearance of their skin improved
- 89%reported more moisture and glow
- 86%reported healthier hair
What is the 60-day collagen routine?
The 60-day collagen routine is one portion of Core™ a day, repeated for 60 days, which makes it the simplest plan we can give you. There is nothing to work out: one portion, once a day, every day.1
Nothing else is attached to it. You will not find a loading week, a schedule that changes halfway, or a list of things to give up. The portion stays the same size from the first pour to the last, and each one holds 11,000 mg of hydrolysed marine collagen, types I and III.1
Where other articles on our blog go deep on a single question, such as our piece on collagen courses and breaks, this one stays practical. It covers what you do each morning, afternoon or evening, and how the days add up.
How do you take a collagen portion each day?
Shake the pack, pour a portion into the cap, drink it, then return the pack to the fridge: four steps, with no spoon, scoop or glass required unless you want one. The instructions come straight from the product specification.1
- Step one
Shake
Pick up the pack and shake it before the lid comes off.
- Step two
Pour
Use the cap as your measuring cup and pour the portion into it. The cap holds one full serving.
- Step three
Drink
Have it straight from the cap. If you like a longer drink, tip the portion into a glass of water or blend it through a smoothie.
- Step four
Chill
Put the lid on and return the pack to the fridge, where an opened pack is kept until it is finished.
With the pack back in the fridge, the day's routine is done, and tomorrow's is identical. Core™ has a natural berry flavour and is sugar free and fat free, so the choice between cap, water and smoothie comes down to what you enjoy.1 For more on the drink itself, our guide to liquid marine collagen covers what is in the pack.
assets/img/blog/rt-pour.webpWhat does a 60-day routine look like, week by week?
At one portion a day, the 60 days pass the points where named studies took their readings: week 4 ends on day 28 and week 8 on day 56. Beside each phase, the table notes what a named study, or our own trial, recorded at a reading that falls around that point.
Read the right-hand column as a record, not a forecast. Each published study had its own participants, its own collagen and its own dose, all stated in the row. Our trial figures are for our liquid marine collagen.
The 60-day routine, one phase at a time
Which days each phase covers, and what a named study or our own trial recorded at a reading around that point.
| Phase | Days | What was recorded around this point, and by whom |
|---|---|---|
| Weeks 1 to 4 | Days 1 to 28. This is where the four steps become familiar. | Week 4 closes this phase. Our user trial: women reported visible results in as little as 4 weeks.1 Proksch 2014: in a randomised, double-blind, placebo-controlled trial of 114 women aged 45 to 65, with 2.5 g of collagen peptides a day, eye-wrinkle volume was significantly lower than placebo after 4 weeks.2 Sangsuwan 2021: in a randomised, double-blind, placebo-controlled trial of 36 postmenopausal women, 5 g of marine collagen hydrolysate a day for 4 weeks improved cheek skin elasticity compared with placebo.3 |
| Weeks 5 to 8 | Days 29 to 56. | Week 8 closes this phase. Our user trial: after 8 weeks, 95% of 106 women felt the appearance of their skin improved, and women reported further improvement by week 8.1 Proksch 2014: eye-wrinkle volume was significantly lower than placebo after 8 weeks, by about 20%.2 |
| Past week 8 | Day 57 to day 60, and any days you carry on beyond it. | Pu 2023: a meta-analysis of 26 randomised controlled trials with 1,721 participants found oral collagen significantly improved skin hydration and elasticity compared with placebo. The hydration effect was larger when collagen was taken for more than 8 weeks.4 |
The left-hand columns give you three markers to look out for: day 28, day 56 and day 60. If you would like the evidence set out over a longer stretch, see our timeline of when collagen results were measured.
Why 60 days?
Sixty days is a round figure that covers the length of our own user trial, with a few days to spare.
In the user trial of our liquid marine collagen, 106 women took it daily for 8 weeks, and their answers were collected on that schedule.1 Week 8 ends on day 56, so a 60-day routine carries you through those same 8 weeks and a little beyond.
Pooled research has looked at duration too, in a 2023 meta-analysis that combined 26 randomised controlled trials and 1,721 participants. Its finding on timing was specific to one measure: the effect on skin hydration was larger when collagen was taken for more than 8 weeks.4
Sixty days, then, matches how our trial was run and takes you past the 8-week point the pooled research looked at.
How do you keep the habit?
Tie the portion to something you already do each day. In our user trial, 99% of the 106 women said our liquid marine collagen was easy to include in their daily routine.1 The routine asks very little, and these ideas keep it that way.
- Pick a moment you will keep. The directions for Core™ say one portion a day, so tie it to something you already do every day.
- Let the fridge remind you. An opened pack belongs in the fridge anyway. Stand it at the front of a shelf you open every day and it does the remembering for you.
- Trust the cap. The cap is the measure, so there is nothing to wash, weigh or look up. You pour, drink and put the lid back on.
- Count in weeks. Sixty days can sound long. Take it one week at a time, and it is eight of them with a few days over.
- Change the serve, not the portion. Have it straight on Monday, in water on Tuesday and in a smoothie at the weekend, and it is the same every time.
The whole purpose of the routine is to make the daily portion easy for you.
Core™ comes with free delivery from €60, 30-day money back, and a one-off purchase with no subscription.1
What did women report after 8 weeks?
After 8 weeks of a daily serving of our liquid marine collagen, 99% of the 106 women in our user trial found it easy to include in their daily routine and 95% felt the appearance of their skin improved. Each figure below is a share of the women who took part.1
found it easy to include in their daily routine.
felt that the appearance of their skin improved.
reported more moisture and glow.
noticed a reduction in fine lines and wrinkles.
reported healthier hair.
reported stronger nails.
A further 81% reported firmer skin. Participants also reported more energy and better joint flexibility.1
The photographs below show two of the participants. They are what the trial looked like for these women in our study, shared as a record of it.


Participants in the 8-week user trial of our liquid marine collagen, photographed before and after.
What do other women say about a daily portion?
A beauty editor who took marine collagen every day for two months found her skin plumper and more radiant, and two verified buyers of our liquid marine collagen praise what it does for their skin and nails. Their first-hand accounts are below.
“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 UK5
“The taste is amazing and it is sugar free! Love what it does to my hair, nails and skin.”
★★★★★
Suzanne H.Verified purchase · Amazon, United Kingdom · 26 August 2024
“I can really see the visible changes in my skin and nails.”
★★★★★
Check4YouVerified purchase · Amazon, Germany · 27 December 2023
An independent first-person account of marine collagen published by the outlet named, and verified buyer reviews of our liquid marine collagen as sold under our manufacturer's own label.
Questions about the 60-day collagen routine
How do I take collagen every day?
With Core™, the product specification gives four steps: shake the pack, pour a portion into the cap, drink it, and return the pack to the fridge. You can drink the portion straight or stir it into water or a smoothie.
When in the day do I take the portion?
At any time of day you will keep to: the instruction for Core™ is one portion a day, and it leaves the hour to you. Our user trial describes its schedule the same way: 106 women took our liquid marine collagen daily for 8 weeks.
Can I mix a collagen portion into another drink?
Yes. The directions for Core™ say to drink it straight or stir it into water or a smoothie. The serving is whichever way you have it.
Does liquid collagen need to go in the fridge?
Once opened, yes. Core's directions are to keep the pack in the fridge after opening.
Why is the course 60 days and not 8 weeks?
Our user trial ran for 8 weeks, which ends on day 56. A 60-day routine therefore covers the full 8 weeks of the trial schedule and runs a little beyond it.