Stratum Corneum

The stratum corneum is the topmost layer of the epidermis, composed of dead skin cells embedded in lipids. It acts as the skin’s first line of defense—locking in moisture and blocking out irritants, microbes, and pollutants. In AgeBiome™ rituals, maintaining a resilient stratum corneum is essential for protecting the deeper layers during exfoliation, serum infusion, and active stimulation.

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Why It’s Used:

• Regulates moisture retention and prevents water loss
• Shields skin from environmental and microbial stress
• Influences sensitivity, texture, and overall tone
• Prepares or protects skin before and after actives
• Can be compromised by over-exfoliation or harsh ingredients
• Strengthened through biome-safe exfoliants and lipid-rich finishers

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What It Means for You:‍

A healthy stratum corneum helps your skin feel strong, smooth, and calm—so that all the deeper work happening beneath stays protected where it matters.

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