Signs of ageing

What's actually happening as you age

Two processes run in parallel: intrinsic ageing (collagen production drops as fibroblasts and the surrounding dermal matrix lose some of their youthful support, described clearly in Varani 2006) and photoageing (UV-driven collagen and elastin breakdown through matrix metalloproteinases). The Fisher 2002 review on the mechanisms is canonical here.

Photoageing is the biggest driver you can change. Flament 2013 estimated that UV exposure accounted for about 80% of visible facial ageing signs in Caucasian women, especially pigmentation and texture changes. The exact percentage will not be identical for every face, but the practical point holds: your sunscreen routine is doing more for your skin in five years than any anti-ageing serum on the market.

There are supporting drivers too. Wang 2024 reviews how advanced glycation end-products can alter skin proteins and feed oxidative stress, while Parrado 2019 covers pollution and other environmental stressors. Useful to know, but not a reason to build a panicked 12-step anti-ageing routine. SPF, retinol, a steady moisturiser, and patience still do most of the useful work.

What works: the four-active axis

The published evidence consistently points at the same four things, in this rough order of impact:

1. Daily broad-spectrum SPF. Hughes 2013 was a randomised controlled trial. Daily sunscreen users had measurably less skin ageing at 4.5 years versus the discretionary group. Nothing else in cosmetics has this level of evidence.
2. Retinol. Kafi 2007 and Mukherjee 2006 between them document fine-line improvement, glycosaminoglycan/procollagen changes, and better elasticity over 12–24 weeks. The Moisturizer is our retinol product.
3. Niacinamide. Bissett 2005 measured improvements in hyperpigmentation, redness, sallowness, and skin elasticity at 5% over 12 weeks. Modest but real.
4. Topical antioxidants. L-ascorbic acid under SPF is the canonical pairing; our Optimizer uses azelaic acid + niacinamide as an alternative antioxidant axis if vitamin C doesn't suit your routine.

What doesn't make this list, and why

Collagen drinks, snail mucin facials, peptide creams, jade rollers. Either weak evidence, no measurable mechanism, or far less proof than SPF and retinoids. Not bad, not where I would start.

Red light therapy. More interesting than many trends, but still an add-on. Get SPF and retinol consistent before asking an LED mask to do the main work.

Aggressive in-office "anti-ageing" treatments if your topical routine isn't already dialled in. The investment-to-result ratio is much better in retinol + SPF than in another laser session.

Picking one hero product and skipping the rest. Retinol alone without SPF is a worse routine than SPF alone without retinol. UV damage you don't prevent will outpace any retinoid's collagen-building.