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Created by Susie Willis, Romilly Wilde looks beyond individual hero ingredients to focus on the biology of the skin itself, exploring how the skin's protein network responds to the daily environmental stressors that influence visible ageing.

Susie shares the science, philosophy and research behind The Biology of Beauty®, explaining why understanding what happens beneath the surface is central to the way the brand formulates its products. Let's discover Romilly Wilde and the story behind its Proteomic Longevity System.

    Beneath the Surface

    Skincare has become fluent in hero ingredients. Retinol. Vitamin C. Peptides. Collagen. Each arrives with its own promise and, increasingly, its own aisle.

    I start somewhere else. Beauty begins with your biology. Skin does not work ingredient by ingredient. It works as a system, and that system is built on protein.

    At Romilly Wilde, The Biology of Beauty®, we formulate around the proteome, the network of proteins that helps give skin its structure, strength and elasticity. Collagen contributes to firmness. Elastin supports elasticity. Keratin is a key component of the protective barrier. Together with thousands of other proteins, they form a complex, interconnected network that contributes to the appearance and quality of healthy-looking skin.

    It is a harder place to begin than a single hero molecule. It is also the only place that made sense to me.

    Ageing is not a Surface Event

    Ageing begins in the cell, long before it reaches the mirror.

    Over time, everyday stressors including sunlight, pollution and the natural ageing process can trigger oxidation within that protein network. Think of oxidation as biological rust, the same process that corrodes metal or browns a cut apple, quietly acting on skin's proteins long before anything changes on the surface.

    The scientific term for that daily load is the exposome: the sum of everything skin meets in a day. Pollution, UV, particulate matter, the cumulative wear of modern life. I call it the urban burden, because that is what it feels like on a Tuesday in central London.

    Skin is perpetually rebuilding what is continuously being compromised. Most skincare responds to the visible consequence. I wanted to work at the level where it begins.

    Measured, Not Simply Claimed

    If you are going to talk about science, be precise about what the science shows. In a pharmacy, that matters more than anywhere.
    Our testing was conducted by OxiProteomics, an independent laboratory specialising in oxidative-damage proteomics. They examine protein carbonylation, a measurable marker of oxidative damage within the skin's protein network, using advanced immunofluorescence imaging on human skin samples under pollution and environmental challenge.

    Unlike a claim, a biomarker can be measured before and after. It turns invisible damage into evidence.

    In that testing, skin samples exposed to those stressors showed higher levels of damaged proteins and lower levels of repair proteins. When samples were treated with the Tripeptide Antioxidant Day Cream before exposure, they showed significantly less new damage. When the Peptide Longevity Serum was applied after exposure, damaged proteins were significantly reduced and repair proteins increased.

    We are equally clear about what this is. Independent laboratory testing on human skin samples. Not a consumer study, and not a measure of how skin looks. Data on file.

    We are as precise about which formulas it covers. The Peptide Longevity Serum and the Tripeptide Antioxidant Day Cream are the two supported by product-specific studies alongside this proteomic imaging. The cleanser, the night cream and the eye serum are built on a validated formulation strategy and ingredients selected for their established cosmetic benefits. I would rather tell you that than let one set of results stand in for five.

    Our research on protein carbonylation has been accepted for presentation at the European Society for Dermatological Research annual meeting, with the abstract published in the Journal of Investigative Dermatology.

    We call this radical transparency. In practice it means showing the work, rather than letting an impressive-sounding number do all of it.

    No Hero Ingredient. A System, Chosen Deliberately.

    The Peptide Longevity Serum makes the philosophy tangible. Rather than leaning on a single technology, the formula combines several, each chosen for a defined role. A mini-protein modelled on the skin's own signalling proteins. A six amino-acid peptide drawn from protein-folding research. A biomimetic matrix peptide for the look of firmness and density. Centella fractions, grown by plant cell culture.

    That approach runs against one of beauty's most persistent habits, which is to take a complex formulation and reduce it to the one ingredient that can carry the marketing.

    I came to skincare from nutrition, and I am interested in what an ingredient is doing inside the whole formula. Different technologies do different jobs. The skill is choosing them deliberately and making them work together.

    The Proteomic Longevity System

    Five products. Cleanse, treat, defend, renew, eye care.

    The Balm-to-Milk Cleanser removes make-up, SPF and daily impurities without leaving skin stripped. Its golden hue comes entirely from its botanical oils.

    The Peptide Longevity Serum is the treatment step, and the anchor of the range. A lightweight multi-peptide serum for skin exposed to everyday oxidative stress.

    The Tripeptide Antioxidant Day Cream is daily antioxidant defence against the environmental stress skin meets. Its coral tint comes from astaxanthin, an antioxidant derived from microalgae, and disappears as the formula absorbs. It is not a sunscreen, so wear it under a broad-spectrum SPF.

    The Bioretinol Overnight Rich Cream supports the skin's natural overnight renewal with DermaGenix7™, a complex of botanical actives including a plant-derived bio-retinol alternative from Bidens pilosa. No retinol, no retinoid.

    The Sculpting Eye Serum carries its own targeted peptide, formulated for the eye area.

    The serum anchors the system, but it does not perform alone. Different formulations, different jobs, one underlying view of skin. You do not need all five to begin.

    Why John Bell & Croyden

    I could have launched anywhere. I wanted to launch here.

    John Bell & Croyden has sat at the meeting point of health, science and beauty on Wigmore Street for generations, long before longevity became a category. Its customers arrive already asking the question we built the brand to answer: what is actually behind this claim, and who measured it? If you are reading this, you are probably one of them.

    That is a rare place to launch a brand that would rather show its laboratory work than its before-and-afters. The pharmacy has the expertise on the floor to hold a conversation about carbonylation and the exposome, and the confidence to sell on evidence rather than promise. I am not asking you to take my word for it. I am asking you to look at the biology.

    Look beneath the surface. Be clear about what the evidence can and cannot say. That is the brand, and this is the right home for it.

    Susie Willis
    Founder, Romilly Wilde, The Biology of Beauty®