Ageing skin is not a cosmetic problem. It is a biological one. The visible changes — the loss of firmness, the deepening of lines, the shift in texture and tone — are the surface expression of processes that have been running for years beneath it. Understanding those processes is the only way to address them with any real intelligence. This is not an argument against topical skincare. It is an argument for also addressing the inside, where those processes originate.
What actually changes in skin as we age
Skin is a complex organ. Its structural integrity depends on two primary proteins: collagen and elastin. Collagen provides tensile strength; elastin provides rebound. In young skin, both are produced continuously and efficiently. From the late 20s onwards, collagen synthesis begins to slow — at roughly 1 to 1.5% per year after 30. By the time visible changes appear, significant structural loss has already occurred.
Alongside this, the production of hyaluronic acid — the molecule responsible for skin’s water-binding capacity — declines. Skin becomes progressively less able to hold moisture, which affects its plumpness, resilience and barrier function simultaneously.
Oxidative stress compounds these structural changes. Free radicals generated by UV exposure, pollution and normal metabolic processes damage both collagen fibres and cell membranes. The body’s antioxidant defences — particularly glutathione — weaken with age, allowing oxidative damage to accumulate.
Chronic low-grade inflammation, sometimes called inflammaging, accelerates all of this. Inflammatory cytokines degrade collagen directly via matrix metalloproteinases (MMPs), the enzymes that break down the extracellular matrix. Keeping inflammatory signalling low is arguably the single most important factor in slowing the visible ageing process.
The sulphur connection
Sulphur is the fourth most abundant mineral in the human body. It is a structural component of the amino acids methionine and cysteine, both of which are required for the synthesis of collagen and keratin. It is also a precursor to glutathione, the body’s primary endogenous antioxidant.
Here is the point most people miss: collagen synthesis requires sulphur-containing amino acids. Without adequate bioavailable sulphur, the collagen matrix cannot be properly maintained. The body prioritises sulphur for essential metabolic functions — which means skin, hair and nails are often the last to receive what they need.
Sulphur availability in the body declines with age and is not reliably obtained at therapeutic levels from diet alone. Cruciferous vegetables, garlic, onions and eggs contain sulphur, but not in forms easily absorbed at the doses that matter.
MSM — methylsulfonylmethane — is the most bioavailable form of supplemental sulphur. It crosses cell membranes readily, is recognised by the body as a natural compound, and delivers sulphur to tissues — including skin — in a form that can be used immediately.
MSM and collagen synthesis
The connection between MSM and collagen is mechanistic, not speculative. Sulphur is required for the hydroxylation of proline and lysine, two amino acids that form the triple-helix structure of collagen fibres. Without sufficient sulphur, this process is impaired.
MSM also inhibits the activity of matrix metalloproteinases — the enzymes responsible for breaking down collagen. This is significant: it suggests MSM operates at both ends of the collagen equation, supporting synthesis while reducing degradation. The net effect is a better-maintained collagen matrix over time.
Research published in the journal Nutrients in 2017 provides a comprehensive review of MSM’s applications and mechanisms, including its role in connective tissue and skin health. The review identifies MSM’s antioxidant and anti-inflammatory properties as central to its effects on skin, noting its capacity to reduce oxidative stress in skin cells and modulate inflammatory signalling.
MSM’s anti-inflammatory role in ageing skin
Inflammation is the dominant driver of skin ageing. The NF-κB pathway — the master regulator of the body’s inflammatory response — becomes progressively dysregulated with age, contributing to the low-grade chronic inflammation that degrades collagen and accelerates visible ageing.
MSM inhibits NF-κB activation. By suppressing this upstream signal, it reduces the downstream production of pro-inflammatory cytokines including IL-1, IL-6 and TNF-α — the same mediators that directly activate collagen-degrading enzymes.
MSM also enhances the body’s antioxidant defences. Research has shown that MSM supplementation increases plasma antioxidant capacity and reduces markers of oxidative stress, including protein carbonylation. In skin, which is continuously exposed to oxidative insults, this systemic antioxidant support translates to a reduction in one of the primary accelerants of structural ageing.
Skin, hair and nails: the sulphur trio
The structural proteins of skin, hair and nails — collagen and keratin — are both sulphur-rich. Keratin, which forms the hair shaft and nail plate, contains a high concentration of the sulphur-containing amino acid cysteine. The disulphide bonds that give keratin its strength and resilience depend on adequate sulphur availability.
This is why MSM supplementation is frequently associated with improvements across all three — skin, hair and nails — rather than any one in isolation. They draw on the same raw material. Adequate bioavailable sulphur supports the structural integrity of all three simultaneously.
It is also why the effects of MSM on appearance are not limited to collagen. Where topical skincare can address the surface of the skin directly, an internal supplement works at the level of protein synthesis throughout the body, reaching the hair follicle and nail bed in ways that no topical product can.
The OSKIA story
OSKIA did not arrive at MSM through trend-spotting. The brand was founded on a personal observation made over 25 years ago.
Georgie Cleeve’s father founded NAF — Natural Animal Feeds — which had been using MSM as a joint supplement in equine nutrition for decades. As a teenager, Georgie began taking it for her knees, following multiple operations. Her knees recovered. What she had not anticipated was what happened to her skin. The redness, the reactivity, the breakouts she’d had since adolescence: all of it cleared. Hair grew faster. Nails strengthened.
That observation — that MSM was doing something significant for the body as a whole, not just the joint — became the founding premise of OSKIA. We became the first skincare brand to use MSM as an active ingredient. The supplement business grew from the same root: the conviction that what you put inside your body matters as much as what you put on the surface.
OSKIA MSM Bio-Plus
OSKIA MSM Bio-Plus is a high-strength oral MSM supplement formulated to deliver clinically meaningful doses of methylsulfonylmethane in a bioavailable form. It is developed by the same team that formulates OSKIA’s topical skincare range, with the same commitment to ingredient quality and evidence-based formulation.
For skin health, the most effective approach combines MSM Bio-Plus taken daily with a topical skincare routine containing MSM — working at both levels simultaneously. The inside addresses the structural and inflammatory environment from which skin health is determined. The outside addresses what that environment produces at the surface. This is what we mean by intelligent skin nutrition.
What to expect
MSM is not a fast-acting supplement. Its benefits are cumulative, building with consistent daily use over weeks rather than days. Most people report the first visible changes in skin quality — improved texture, reduced redness, better hydration — from around 8 weeks of consistent use. Hair and nail changes are typically visible from 6 to 8 weeks.
The results are not dramatic overnight transformations. They are the kind of sustained, progressive improvements that come from addressing skin health at its source rather than treating its symptoms.
Frequently asked questions
How is MSM different from taking a collagen supplement?
Collagen supplements provide the raw material of collagen — peptides that the body can use in synthesis. MSM provides sulphur, which is required for that synthesis to work properly, and simultaneously reduces the inflammation and oxidative stress that degrade collagen. They work through different mechanisms and can be complementary.
How long before I see a difference in my skin?
Most people notice changes in skin texture and quality from around 8 to 12 weeks of consistent daily use. Results build gradually rather than appearing suddenly. Hair and nail improvements are often noticed earlier, from around 6 to 8 weeks.
Can I take MSM alongside my existing skincare supplements?
Yes. MSM is generally well tolerated alongside other supplements including collagen, vitamin C, hyaluronic acid and omega-3s. Vitamin C in particular is a useful complement: it is a cofactor in collagen synthesis, and MSM’s sulphur provision supports the same process from a different angle.
Is MSM suitable for menopausal skin?
Yes. Oestrogen decline accelerates collagen loss and increases skin dryness and sensitivity. MSM’s dual role — supporting structural protein synthesis and reducing inflammatory signalling — addresses both of these changes directly. It is particularly relevant for skin in the perimenopausal and postmenopausal period.
Does MSM have any side effects?
MSM is consistently well tolerated in clinical trials. Some people report mild digestive sensitivity in the first week of supplementation, which typically resolves quickly. Starting at a lower dose and building up gradually can help.
Clinical references
- Parcell S. Sulphur in human nutrition and applications in medicine. Altern Med Rev. 2002;7(1):22–44.
- Butawan M, Benjamin RL, Bloomer RJ. Methylsulfonylmethane: Applications and Safety of a Novel Dietary Supplement. Nutrients. 2017;9(3):290.
- Ahn H, et al. Methylsulfonylmethane inhibits NF-κB activation and reduces pro-inflammatory cytokines. Phytomedicine. 2015.
- Nakhostin-Roohi B, et al. Effects of supplementation with methylsulfonylmethane on oxidative stress following acute exercise. J Int Soc Sports Nutr. 2011.
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Intelligent skin nutrition, inside and out
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