\"Anti-ageing\" is one of the most marketed and least precisely defined terms in the supplement industry. Ageing is not one process — it's several running in parallel: collagen decline, cellular energy loss, oxidative stress, and slower sleep-linked repair. An anti-ageing supplement that actually does something targets one or more of these mechanisms specifically, rather than promising to reverse ageing as a single event.
TL;DR: The anti-ageing ingredients with genuine clinical support are collagen peptides with vitamin C (skin elasticity), magnesium and adaptogens (sleep-linked repair, since most tissue repair happens overnight), antioxidants like vitamin C and E (oxidative stress), and NAD+ precursors (cellular energy, though evidence in humans is still early). Nothing here reverses ageing; the honest framing is slowing the rate and supporting the repair processes your body already runs. The SRX Formula Beauty Protocol is structured around three of these mechanisms across a daily morning-afternoon-night system.
Ageing is not one process, so \"anti-ageing\" needs a mechanism
The visible signs commonly labelled \"ageing\" — skin laxity, dullness, slower recovery, disrupted sleep — trace back to distinct, separately studied biological processes. Collagen synthesis declines roughly 1% per year from the mid-30s. Oxidative stress from UV and environmental exposure accumulates and damages existing collagen. Cellular energy production (NAD+ dependent) falls by an estimated 50% between ages 40 and 60. Sleep architecture changes reduce the deep-sleep window where most tissue repair happens. A supplement that targets one of these without addressing the others will show a narrower, more specific benefit — which is fine, as long as the expectation matches the mechanism.
What has real evidence: collagen peptides plus vitamin C
Hydrolysed collagen, taken consistently at 2.5–10g daily for 8–12 weeks, has shown statistically significant skin elasticity and hydration improvements in randomised controlled trials. Vitamin C is a required cofactor for collagen's structural cross-linking — without it, collagen intake is poorly utilised regardless of dose.
What's underrated: sleep-linked repair support
Collagen cross-linking and cellular repair are concentrated in deep, slow-wave sleep, driven by growth hormone release. Magnesium glycinate and adaptogens like ashwagandha support both sleep quality and the cortisol regulation that, when disrupted, actively degrades existing collagen. This mechanism is frequently left out of anti-ageing marketing entirely, despite arguably being as important as the topical or ingestible actives themselves.
What's promising but early: NAD+ precursors
NMN and NR (NAD+ precursors) have shown cellular energy benefits in animal models and early human trials, but effect sizes in peer-reviewed human data remain modest as of 2026. Worth knowing about, not worth prioritising over the foundational, better-evidenced categories above.
What doesn't work the way marketing implies
No oral supplement reverses ageing or replaces the volume lost to fat and bone remodelling in the face — that is a different mechanism to elasticity or hydration support. Setting this expectation correctly avoids the disappointment that drives most people to abandon a routine before the 8-12 week window where real, measurable change appears.
FAQ
Do anti-ageing supplements actually work?
The ingredients with genuine RCT support — collagen with vitamin C, magnesium, adaptogens, antioxidants — show measurable, specific effects (skin elasticity, sleep quality, oxidative markers), typically after 8–12 weeks of consistent use. None reverse ageing outright.
What is the best anti-ageing supplement for skin?
Hydrolysed collagen peptides combined with vitamin C have the strongest combined evidence base for skin-specific elasticity and hydration outcomes.
How long do anti-ageing supplements take to work?
Sleep and energy-related benefits from magnesium and adaptogens can appear within 2–4 weeks; skin elasticity changes from collagen require a minimum of 8–12 weeks of daily consistency.
Are NAD+ supplements worth taking for anti-ageing?
Human evidence is still early and effect sizes modest as of 2026; the foundational categories (collagen, magnesium, adaptogens, antioxidants) have stronger, more established evidence and are the more defensible starting point.
For a system that covers collagen support, sleep-linked repair, and cellular hydration across one daily routine, see The SRX Formula Beauty Protocol, from £8 a day.