Menopause, Dry Skin, and Collagen: What Is Really Happening — and What Marine Collagen Can Do About It

If you are in your forties or fifties and have noticed your skin becoming drier, thinner, or less resilient than it was — you are not imagining it, and it is not simply a matter of ageing. The primary driver is hormonal, and the mechanism involves collagen directly.

This article explains the biology behind menopausal skin changes, what the research shows about collagen supplementation, and why marine collagen Type I is specifically relevant for women in perimenopause and menopause.

What Oestrogen Has to Do With Your Skin

Oestrogen and collagen are more closely linked than most people realise. Oestrogen receptors are present in skin fibroblasts — the cells responsible for producing collagen and other structural proteins. Oestrogen stimulates fibroblast activity, promotes collagen synthesis, supports skin hydration, and slows the activity of matrix metalloproteinases (MMPs) — the enzymes that break collagen down.

During perimenopause and menopause, oestrogen levels fall significantly and progressively. The consequences for skin are measurable:

This is not gradual background ageing — it is an acceleration of structural change directly tied to hormonal shift. Women in perimenopause and menopause frequently report new or worsening joint stiffness alongside skin changes, and the underlying mechanism — declining collagen maintenance due to lower oestrogen — is the same.

What Changes in Menopausal Skin, Specifically

Reduced hydration

Oestrogen promotes production of hyaluronic acid and glycosaminoglycans in the dermis — molecules that bind water and maintain skin plumpness. When oestrogen falls, water-holding capacity decreases and skin becomes drier and less supple.

Loss of elasticity

The dermis is primarily composed of Type I collagen fibres that give skin its firmness and ability to spring back. As collagen content declines and remaining fibres become less organised, skin loses elasticity and fine lines deepen.

Increased transepidermal water loss

The skin barrier becomes less effective, allowing moisture to escape more easily — contributing to persistent dryness and sensitivity.

Thinning

Lower collagen density means the dermis itself becomes physically thinner, which affects both appearance and function.

What the Research Shows About Collagen Supplementation

Skin Hydration and Elasticity: The Clinical Evidence

Asserin et al. (2015), published in the Journal of Cosmetic Dermatology, conducted randomised placebo-controlled trials showing that oral collagen peptide supplementation significantly increased skin moisture levels and improved the structure of the dermal collagen network — in both younger and older women.

Proksch et al. (2014) in Skin Pharmacology and Physiology demonstrated in a randomised trial that oral collagen peptides reduced the appearance of skin wrinkles and increased dermal matrix synthesis — meaning the skin was actively producing more structural tissue, not only appearing better on the surface.

Bartoletti et al. (2025) in Clinical, Cosmetic and Investigational Dermatology reviewed the emerging evidence for hydrolysed marine collagen orally administered, documenting multiple studies showing improvements in skin hydration, elasticity and density, with mechanistic evidence that collagen peptides reach the dermis and stimulate fibroblast activity.

A 2019 meta-analysis of 11 randomised controlled trials involving over 800 participants found that oral collagen peptides consistently improved skin elasticity, hydration and dermal collagen density compared with placebo.

Specifically in Menopausal Women

A 2024 randomised controlled study published in PMC directly examined fish-derived collagen peptides in menopausal women over six months. The results were specific and measurable:

• Skin hydration improved by 23% compared to baseline after 180 days

• Skin elasticity improved by 12.23% in the collagen-only group

• Hair shedding was significantly reduced compared to placebo

• The placebo group showed negligible changes in skin outcomes

Collagen's contribution to menopausal skin health was specific: the effect on skin was more pronounced from collagen alone than from calcium and vitamin D without collagen.

Our Dermatest® Clinical Results

The Pure Marine Collagen used in Nordic Nutrients products has been clinically tested in an 8-week dermatological application study conducted by Dermatest® GmbH, Münster (Dr. Werner Voss & Dr. Gerrit Schlippe).

How Marine Collagen Works in Skin: The Mechanism

Marine collagen peptides do not function by replacing lost collagen directly. The mechanism is more specific:

When small collagen-derived peptides (below 3 kDa) are absorbed into the bloodstream, they are detected by fibroblasts in the dermis as signals of collagen breakdown. The body interprets their presence as an indication that collagen repair is needed — and fibroblasts respond by upregulating collagen synthesis and reducing collagen-degrading enzyme activity.

This signalling mechanism means that collagen supplementation triggers the skin's own repair machinery, rather than simply providing substrate. For menopausal women, where the oestrogen-driven signal to fibroblasts has diminished, this alternative stimulation of collagen production may provide meaningful support that does not depend on hormonal status.

Why Type I Marine Collagen Is the Right Form

Type I collagen accounts for approximately 80–90% of the collagen in human skin. It is the structural backbone of the dermis — responsible for firmness, resilience and moisture retention.

Marine collagen from wild-caught cod is Type I. Its peptide structure closely resembles human Type I collagen, and the low molecular weight (below 3 kDa) means peptides are efficiently absorbed and reach systemic circulation intact. Collagen applied to the skin's surface does not penetrate the epidermis effectively — the benefit comes from oral supplementation, from the inside out.

Timing, Consistency, and Vitamin C

Skin remodelling operates on a biological timescale. Clinical studies consistently show that meaningful improvements develop over 8–12 weeks of daily supplementation. In the menopausal women's study cited above, the most significant gains were measured at the 6-month mark.

Starting in perimenopause — when collagen loss is accelerating but has not yet reached its steepest decline — makes biological sense.

Vitamin C is essential: it is required for the enzymatic steps that cross-link and stabilise collagen fibres during synthesis. The EU-approved health claim states this directly: vitamin C contributes to normal collagen formation for the normal function of skin. Adding vitamin C alongside collagen — through food, juice or a supplement — meaningfully supports the effect.

What Collagen Supplementation Is, and What It Is Not

Marine collagen supplementation is not a hormone replacement and does not interact with oestrogen pathways. It does not reverse menopause. What the evidence supports, from multiple randomised controlled trials:

• Significantly increased measurable skin hydration

• Improved skin elasticity and dermal density

• Reduced hair loss in menopausal women

• Excellent safety profile — no adverse effects reported in clinical trials

• Benefits develop over 8–12 weeks and continue to strengthen over 6 months

Summary

Menopausal skin changes are directly linked to declining oestrogen and the accelerated collagen loss that follows — up to 30% in the first five years. Marine collagen Type I, taken as hydrolysed peptides below 3 kDa, has been shown in clinical trials to significantly improve skin hydration, elasticity and structural density, with the mechanism involving direct fibroblast stimulation from within the dermis. Benefits develop over 8–12 weeks and strengthen with continued use.

References

1. Asserin J et al. The effect of oral collagen peptide supplementation on skin moisture and the dermal collagen network. Journal of Cosmetic Dermatology. 2015;14(4):291–301.

2. Proksch E et al. Oral intake of specific bioactive collagen peptides reduces skin wrinkles and increases dermal matrix synthesis. Skin Pharmacology and Physiology. 2014;27(3):113–119.

3. Bartoletti E et al. Hydrolyzed Marine Collagen: Emerging Evidence of Benefits via the Oral Route. Clinical, Cosmetic and Investigational Dermatology. 2025;18:3339–3356. doi:10.2147/CCID.S562518

4. Calcium and Vitamin D Supplementation with and Without Collagen on Bone Density and Skin Elasticity in Menopausal Women. PMC. 2024. PMC12468524.

5. Ricard-Blum S. The collagen family. Cold Spring Harbor Perspectives in Biology. 2011;3(1):a004978.

6. Oesser S et al. Oral administration of ¹⁴C labeled gelatin hydrolysate leads to an accumulation of radioactivity in cartilage of mice. Journal of Nutrition. 1999;129(10):1891–1895.

7. Dermatest® GmbH, Münster — Dr. med. Werner Voss & Dr. med. Gerrit Schlippe. Eight-week clinical-dermatological application test, Seagarden Norway. [Certification study, results on file.]

8. Proksch E et al. Oral supplementation of specific collagen peptides has beneficial effects on human skin physiology. Skin Pharmacology and Physiology. 2014;27(1):47–55.

9. Meta-analysis of 11 RCTs on oral collagen peptides and skin outcomes (2019) — skin elasticity, hydration and dermal collagen density versus placebo.

Nordic Nutrients Pure Marine Collagen — wild-caught Arctic cod (Gadus morhua, Skrei) | FAO 27 | MSC certified | Made in Norway | HACCP · FSSC 22000 · EFSA · Halal | Dermatest® certified ingredient | 5 g serving = 4.5 g hydrolysed Type I collagen peptides < 3 kDa

This article is for informational purposes and does not constitute medical advice.