Not medical advice. If you have a diagnosed health condition, speak with a healthcare provider before starting anything new.
You’re getting ready in good light and something has shifted. Not the lines — those you’ve made peace with. It’s the way the skin sits now. The firmness that used to be there without effort isn’t quite there anymore. You’re not sure when it changed. It just did.
That’s the starting point. And here’s what makes it useful: it’s not vague. It has a specific cause, a specific timeline, and a specific set of things the research shows can partially address it.
What actually changed — and when
The skin’s firmness comes from collagen — the structural protein that forms the scaffolding of the dermis, the layer beneath the surface. After 25, the body produces roughly 1 to 1.5% less of it every year. That rate is slow enough through your 30s that the effect is barely noticeable.
After 40, the rate accelerates. The reason is estrogen.
Estrogen doesn’t just regulate reproduction. It directly stimulates the cells that produce collagen in skin tissue. As estrogen begins to decline in perimenopause — typically in the early 40s, often years before any cycle change — collagen production slows faster than the age-related decline alone would predict.
Research has documented a 30% reduction in skin collagen content in the first five years following menopause. The decade that surrounds that transition is when the visible shift happens fastest. Not because of ageing in the abstract. Because of a specific hormone doing a specific job in skin tissue, and doing it less.
The same story, three chapters
Here’s what makes this useful to understand: the process behind the skin change is also behind two other changes that tend to arrive in the same window.
Joints. Cartilage — the cushioning tissue in your knees, hips, fingers — is made primarily of collagen. The same decline in production that changes the skin also changes the rate at which cartilage is maintained. The morning stiffness that takes longer to ease than it used to isn’t a different problem. It’s a different chapter of the same story.
Bone. Bone is roughly 30% collagen by weight. Calcium mineralises into a collagen matrix — the scaffold that gives bone its combination of strength and flexibility. Without adequate collagen scaffolding, calcium has less to build into. This is why the bone density conversation that focuses only on calcium and vitamin D is missing a layer.
Skin, joints, bone. One mechanism. Three places it shows up.
What the research on collagen supplementation shows
The argument against collagen supplements used to be that protein breaks down into amino acids in the gut and gets used wherever the body needs them — not necessarily in the skin or joints. That argument has been revised by more specific research.
Hydrolysed collagen — collagen broken into short peptide chains before ingestion — is absorbed differently from regular protein. Specific peptides derived from collagen have been detected in the bloodstream after oral supplementation and appear to act as a signal to the cells that produce collagen, telling them to increase activity. This is the mechanism behind the trial results.
On skin: multiple controlled trials at doses of 2.5 to 10g daily have shown measurable improvements in elasticity, hydration, and the density of the collagen layer in the dermis. Effects are most consistent in women over 40, where the baseline production deficit is widest.
On joints: the evidence is strongest for the low-grade, activity-related stiffness and discomfort that arrives gradually — not inflammatory arthritis, but the kind that crept in and stayed. Several trials have shown improvements in joint comfort scores with consistent use at research doses.
On bone: a five-year trial in postmenopausal women found that those supplementing with collagen peptides alongside calcium and vitamin D retained significantly more bone density than those taking calcium and vitamin D alone. Bone is the chapter with the longest timeline — but also the one where the collagen piece is most consistently underemphasised.
Who this is for
If the skin sitting differently was the first thing you noticed. If your mornings start with joints that need ten minutes before they feel like yours. If both arrived in the same couple of years — that pattern is the collagen story, and this is what addresses it at the source.
If you’re already taking calcium and vitamin D because bone density came up at a check: the collagen scaffold is the piece most women aren’t told about alongside those two. Calcium builds into bone. Collagen is what it builds into.
Who should pause and check something first
Rheumatoid arthritis or other inflammatory joint conditions have disease-modifying treatment as the clinical priority. Supplement support isn’t a substitute — discuss with your rheumatologist.
If bone density loss is already at osteoporosis on a DEXA scan, pharmaceutical bone protection is the first conversation. Supplement support is additive, not primary.
Vegan or strictly plant-based: bovine collagen is not plant-derived. Marine collagen is an alternative, though the bulk of the specific peptide absorption research uses bovine.
Where this leaves you
The firmness you’ve been noticing. The mornings that take longer. The bone density conversation your calcium and vitamin D weren’t fully addressing.
They’re the same story. Advanced Collagen Plus is formulated around what that story requires: hydrolysed collagen peptides at research doses, with vitamin C — the co-factor collagen synthesis depends on — built in.
Try it for 90 days. Skin is where most women notice something first. Joints take a little longer. Both are covered by a full money-back guarantee.
The first few weeks will likely feel unremarkable — that’s expected, not a sign it isn’t working. Skin changes tend to show first, joints take longer still, so the honest expectation is patience through the early stretch rather than an immediate difference.
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What You've Been Asking Us
The same amino acids, but very different concentrations. A bowl of bone broth delivers a variable, usually small amount. A standardised collagen peptide dose delivers a specific amount in a form with documented absorption data. Food sources support; they rarely substitute for the doses the research uses.
Depends what’s in the cheaper one. Many budget collagen powders don’t disclose the Type I/III blend ratio or the actual peptide dose per serving, which makes it hard to know if you’re getting a research-comparable amount. If a cheaper product does disclose both clearly and matches the dose range studies use, it’s a reasonable alternative — the price difference here is largely the vitamin C co-factor being built in and the disclosed, standardised dosing.
For skin and bone: Type I and III are what you want. Type II is primarily for cartilage. Advanced Collagen Plus uses a Type I and III blend — appropriate for the skin, hair, nail, and bone outcomes most women in this decade are addressing.
Vitamin C is required for the enzyme that builds collagen fibres. Without it, collagen synthesis stalls even with adequate peptide supply. Advanced Collagen Plus includes vitamin C in the formula. If you take it separately, any dietary source alongside the dose is sufficient.
Skin changes tend to show first — four to eight weeks. Joints take eight to twelve weeks. Bone density isn’t perceptible subjectively; it shows on a repeat DEXA scan over twelve to twenty-four months. The 90-day guarantee covers the skin and joint window honestly.
Bovine — grass-fed beef. Not marine. Suitable for fish and shellfish allergies. If you have a sensitivity to beef specifically, check with the manufacturer before purchasing.
Understand your pattern before trying anything
The Energy Detective Guide walks you through the five exhaustion patterns most common in women over 45 — so what you try next is pointed at the right mechanism, not just the most popular supplement.
→ Get the Free Energy Detective Guide
