What I look for in every ingredient - and why it matters after 40
What I look for in every ingredient - and why it matters after 40
Most skincare ingredients lists look impressive. Long, scientific, full of actives you recognise from articles you've read. But an ingredient being present in a formula is not the same as it doing anything. After 40, that distinction matters more than ever.
I'm Dona. I founded ICHŌ because I couldn't find a skincare brand that was honest about what happens to your skin after 40 - and built a formula to address it properly. I am a certified nutritional therapist and a self-taught formulator. I spent two years developing the Resilience Complex Treatment Crème before I was satisfied with it.
This is how I approach every ingredient I consider for a formula - and why the skincare ingredients that work for women over 40 are not the same as those that work for younger skin.
"An ingredient being in a formula is not the same as it doing anything. After 40, that distinction matters more than ever."
Why skin after 40 needs a different approach
From our late thirties, oestrogen begins to decline. This is not a dramatic event - it is a gradual shift that changes the biology of your skin in several interconnected ways. Collagen production slows. The skin barrier thins. The natural recovery cycle - the process by which your skin renews itself every 28 to 40 days - takes longer to complete and becomes less efficient.
The result is skin that looks more tired, feels drier, loses firmness more quickly and recovers more slowly from stress. These are not signs that your skin is failing. They are signs that it needs different support.
Most skincare is still formulated for younger skin - prioritising hydration, brightness and immediate visible results. The ingredients that address cellular energy, collagen density and barrier recovery over time are less common, and often less well understood. That is the gap ICHŌ was built to fill.
The skin's recovery cycle: Healthy skin renews itself approximately every 28 days. After 40, this cycle can extend to 40 days or more. Supporting this cycle - rather than overriding it - is the principle behind every ingredient choice in ICHŌ.
The three questions I ask every ingredient
Before any ingredient makes it into a formula, I apply three tests. These are not steps - they are the standards I hold every active to, regardless of how much clinical data sits behind it.
1. Does it support the barrier, or just sit on top of it?
The skin barrier is the outermost layer of skin - a lipid matrix that regulates water loss, protects against environmental stress and determines how well every other ingredient you apply actually works. After 40, the barrier loses lipids and becomes more permeable. Many skincare ingredients address the symptom - adding temporary hydration - without addressing the structure. I look for ingredients that contribute to barrier repair and restoration, not just surface comfort.
2. Does it work with the skin's recovery cycle?
Skin recovery is a biological process that runs on its own rhythm. Ingredients that over-stimulate, strip or force rapid cell turnover can disrupt that rhythm and leave skin more vulnerable. The ingredients I choose work with the cycle - supporting cellular energy, collagen synthesis and structural repair - rather than overriding it with short-term stimulation.
3. Will it still be working in six months?
This is the longevity test. Some ingredients deliver instant visible results by temporarily plumping or brightening the skin. There is nothing wrong with that, but it is not what ICHŌ is built for. I look for ingredients whose mechanism of action builds over consistent use - collagen support that compounds, barrier repair that holds, cellular energy that sustains recovery over time.
The skincare ingredients for women over 40 that earn their place
These are the categories of ingredients I look for when formulating for skin after 40 - and the specific actives that meet the standard.
Most active ingredients fail not because they are ineffective, but because they cannot reach the layers of skin where repair happens. Fermentation breaks actives down into smaller molecular structures, improving skin penetration significantly. When combined with phospholipid delivery - lipid structures that mirror your skin's own cell membranes - the result is an active that is both more bioavailable and better recognised by the skin.
ICHŌ uses ExoVitalize, a fermented citrus complex delivered via phospholipids, with clinical data showing up to a 31% increase in cellular energy production. More cellular energy means skin cells have more capacity to repair, regenerate and hold structural integrity over time.
Cordyceps mushroom and green tea are two of the most studied botanicals in longevity and cellular health research. Individually, both have strong data on antioxidant protection and collagen support. Fermented together, they produce beneficial postbiotics and become significantly more bioavailable.
ICHŌ uses WonderShroom, a fermented mushroom and tea complex with clinical evidence of a 9.5% increase in collagen fibre density, a 7% improvement in skin elasticity and a 13% reduction in markers of cellular ageing - all measured after four weeks of consistent daily use. These are structural results, not surface ones.
Irish Moss is a red algae rich in polysaccharides - long-chain carbohydrates that form a protective film on the skin's surface, significantly reducing transepidermal water loss. After 40, the barrier's ability to retain moisture is one of the first things to decline. The skin feels drier, tighter and more reactive not because it lacks hydration but because it cannot hold what it has.
Irish Moss addresses this structural problem directly. It is not a humectant that draws moisture in - it is a film-former that keeps it there. Used consistently, it supports the barrier's physical integrity over time.
Peptides are the signalling molecules your skin uses to trigger collagen and elastin production. As collagen synthesis slows after 40, peptides can help maintain the communication that drives structural repair. The key distinction is biomimetic - peptides that are structurally similar to the proteins your skin already produces are more likely to be recognised and used than synthetic peptides the skin has no reference point for.
ICHŌ uses a pea-derived biomimetic peptide that supports the skin's own collagen production rather than substituting for it - a distinction that matters for long-term structural results.
Pomegranate is one of the most studied botanicals in longevity research. Its ellagitannins - particularly punicalagin - are precursors to urolithin A, a compound with strong links to mitochondrial health and cellular renewal. Topically, pomegranate extract provides antioxidant protection that supports skin resilience against environmental stress, UV-induced oxidative damage and the cumulative cellular ageing that accelerates after 40.
This is an ingredient whose full benefit builds over time. It is not a quick-fix active - it is a longevity ingredient in the truest sense.
As oestrogen declines, the skin loses lipids - the fatty acids and ceramide precursors that make up the physical structure of the barrier. Many moisturisers address this with occlusives that sit on top of the skin and reduce water loss temporarily. Skin-identical lipids go a step further: they are structurally similar to the lipids your skin already produces and can be incorporated into the barrier itself.
Camellia seed oil closely mirrors the skin's own lipid profile and absorbs readily without occlusion. Babassu oil provides medium-chain fatty acids that nourish without heaviness. Together they support genuine barrier restoration - not surface coating.
"I don't look for ingredients that are trending. I look for ingredients whose mechanism of action holds up - and whose results compound over consistent use."
What this means in practice
The skincare ingredients that work for women over 40 share a common principle: they work with the skin's biology rather than against it. They support cellular energy so recovery can happen properly. They maintain barrier integrity so the skin can hold what it needs. They signal collagen production rather than forcing it. And their results build over weeks and months, not overnight.
This is a different standard from most skincare. It requires patience and consistency. But it is the only standard that produces skin that gets stronger over time - not skin that looks better for a day.
That is what ICHŌ is built on. And it is the only measure I care about.
Read the full ICHŌ formula story
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