Here is a skincare secret the industry would rather you not dwell on. In a lot of serums, most of what you are paying for does very little. Water, thickeners, fillers, and a modest amount of the ingredient on the front of the label. The actives are the headline. The filler is the reality.
The STEM ReGenerative Serum was built to invert that. It is a 90% active formula: roughly nine-tenths of what is in the bottle is there to actually do something for your skin.
What active really means
An active is an ingredient that performs a job for your skin, hydration, antioxidant defense, regenerative signaling, barrier support. Filler is everything else: the ingredients that bulk a formula out or hold it together without contributing much. Every formula needs a little structure. But when 90% of a serum is active, the ratio itself is the statement. This is a formula designed for impact, not padding. And like every regenerative formula, it is not one hero ingredient. It is an architecture, where each active has a defined job. Here is how it is built.
The regenerative core
At the heart of the formula is Consortia Factors™, the patented plant-based regenerative platform, delivering concentrated regenerative signaling. Its standout is UCFx-F™, the Ustilago Cynodontis Ferment, rich in antioxidants and skin-mimetic lipids, supporting hydration, balance, and a healthy-looking glow. Glycoproteins and soy amino acids round out this core, contributing the building blocks and signaling support skin draws on for renewal.
The hydration and barrier layer
A serum has to hold skin's moisture and support its barrier, and this formula layers several well-understood ingredients to do it. Sodium hyaluronate, the form of hyaluronic acid skin drinks in, for deep hydration. Glycerin and sodium PCA, humectants that draw and hold water. Panthenol, provitamin B5, valued for soothing and supporting the barrier. And allantoin, long used to calm and comfort skin. Together they keep skin hydrated, calm, and resilient.
The antioxidant defense layer
Skin generates free radicals every day, accelerated by sun, pollution, and the demands of modern life, and it needs daily antioxidant defense. The ReGenerative Serum builds that in with superoxide dismutase, the naturally occurring antioxidant enzyme, working alongside the antioxidant capacity of UCFx-F™. Defense is part of the architecture, not an afterthought.
A clean, minimal delivery system
The remaining fraction of the formula is a clean, gentle delivery system: the small set of ingredients that give the serum its texture, stability, and a comfortable feel on skin. Minimal, considered, and there only to carry the actives well.
The architecture is the point
No single ingredient here is a miracle, and that is the point. The strength of the ReGenerative Serum is the architecture: a regenerative core, a hydration and barrier layer, and an antioxidant defense layer, almost entirely active, each part doing a real job. The front of the bottle is marketing. The ingredient list is biology. And in a 90% active serum, the biology is most of the bottle.
KEY TAKEAWAYS
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The ReGenerative Serum is a 90% active formula: roughly nine-tenths of the bottle works for your skin.
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An active does a job; filler bulks a formula out. A 90% active ratio is a statement about impact over padding.
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The regenerative core is Consortia Factors™ and the UCFx-F™ ferment, with glycoproteins and soy amino acids.
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A hydration and barrier layer (sodium hyaluronate, glycerin, sodium PCA, panthenol, allantoin) keeps skin hydrated and calm.
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Superoxide dismutase builds antioxidant defense in; the formula is an architecture, not a single hero ingredient.
Choose a serum that is mostly active, not mostly filler.
Discover the STEM ReGenerative Serum
