We’ve peeled enough boiled eggs to know that the thin membrane underneath the shell is the annoying part—the one that clings, tears, and ruins a clean peel. You curse it, bin it, move on.
Turns out I’ve been throwing away something worth keeping.
That papery film lining the inside of every eggshell, the one responsible for approximately thirty seconds of low-grade frustration every Sunday morning, is what scientists call the eggshell membrane. And it’s dense with structural proteins: collagen, elastin, and hyaluronic acid. The kind of compounds that skin-focused supplement brands usually source from much more involved (and considerably more expensive) processes.
I’m not about to overhaul my skincare shelf based on an egg. But when Vicky en France landed on my radar, I kept reading longer than I expected to. The brand is Singapore-based, founded by a husband-and-wife team, and its positioning is more carefully crafted than most: not a French brand, not a K-beauty brand, but something it describes as French elegance meeting Korean intention. The refinement of one tradition paired with the bio-innovation rigour of the other. The whole thing is built around eggshell membrane collagen, which is either a very specific bet or a very good one. Possibly both.
The Thin Film Scientists Couldn’t Ignore
Here’s the actual science, as best as I can translate it without a biochemistry degree.
The eggshell membrane sits between the calcified shell and the egg white, and its job is structural—it holds things together, keeps bacteria out, and manages moisture. To do that, it relies on a dense mesh of proteins and polysaccharides, including several types of collagen, elastin, hyaluronic acid, and glycosaminoglycans. Those last two you’ll recognise from every other serum currently sitting on your bathroom shelf.
What’s made researchers pay closer attention is what happens when you hydrolyse it—break it down into smaller peptides that the body can actually absorb. Studies examining hydrolysed eggshell membrane have reported that it may stimulate collagen synthesis while simultaneously inhibiting the enzymes that break collagen down. A few human trials have also recorded improvements in skin hydration and elasticity after several weeks of consistent supplementation.
To be clear: the research is promising, not conclusive. The trials are relatively small, and the ingredient hasn’t had the decade-long scrutiny that something like vitamin C or retinol has accumulated. But the mechanism is coherent, and the combination of components — structural proteins plus hydration molecules, all in one naturally occurring matrix — is genuinely interesting from a formulation standpoint.
The Part You Normally Throw Away
There’s also a sustainability angle here that’s hard to dismiss, even if you’re tired of brands making it their whole personality.
The global food industry generates enormous quantities of eggshell waste—hundreds of thousands of tonnes annually, most of it heading to landfill. Extracting the membrane and refining it into a usable cosmetic ingredient is a legitimate example of what the industry calls circular beauty: turning a by-product into something functional rather than sourcing virgin raw materials from scratch.
It’s not a perfect system. There’s still processing involved, still energy costs, still the question of supply chain transparency. But as origin stories go, “we use the part everyone throws away” is more grounded than most.
What Vicky en France Actually Makes
The brand’s approach is what they call inside-out skincare”—a combination of ingestible and topical products designed to work together. The centrepiece is C’est la Berry, a chewable collagen jelly taken daily. Alongside eggshell membrane collagen, it includes vitamin C (for collagen synthesis), biotin (for keratin), glutathione (antioxidant support), and prebiotic fibres intended to support gut microbiome balance.
The gut-skin connection is one of those areas where the science is still catching up to the enthusiasm, but the logic is reasonable—a disrupted microbiome does seem to show up in the skin, and prebiotics are about as low-risk an addition as you can make to a formula.
The jelly itself, for what it’s worth, has a berry flavour that leans sweet without being cloying—closer to a good vitamin gummy than a chalky supplement. It’s the kind of thing you can actually build a daily habit around, which matters more than people admit when it comes to supplements.
Alongside it are two topical products: a collagen peel-off mask and an egg-shaped exfoliating soap that provides gentle surface renewal. The soap is cleverly packaged—maybe too clever, the kind of thing that photographs beautifully and then sits on your shelf because you feel slightly silly using it. The peel-off mask, though, does what a peel-off mask should: it’s satisfying to remove, and skin feels noticeably smoother afterwards, even if that’s partly mechanical exfoliation doing the work rather than the collagen.
Why This Won’t Work Overnight (And Shouldn’t)
The honest pitch for anything collagen-related is a slow one. Structural proteins decline gradually with age, and anything meant to shore them up works on the same unhurried timeline. You’re looking at weeks of consistent use before anything worth measuring happens—and even then, the changes tend to be the kind you notice in retrospect rather than in the mirror on a Tuesday.
That’s not a criticism. It’s just the reality of how skin biology works, and I’d rather a brand be upfront about it than promise you a glow-up by the weekend.
What eggshell membrane collagen offers is a coherent addition to that longer conversation: a structural ingredient with a plausible mechanism, from a source that doesn’t require starting from scratch.
Where This Sits Right Now
Snail mucin took years to go from niche Korean beauty curiosity to mainstream staple. Fermented skincare followed a similar arc—derided, then studied, then normalised.
Eggshell membrane collagen feels like it’s at an earlier point on that same curve. The ingredient is real, the science is early but interesting, and the sustainability story is genuine rather than grafted on.
Vicky en France is making a coherent bet on it. Whether eggshell membrane follows snail mucin into the mainstream or remains a niche ingredient in French nutricosmetics—that part I can’t tell you yet. But it’s a more interesting question than I expected when I first read the words “eggshell collagen” and assumed I’d be moving on quickly.
I wasn’t.
