Silk Serum: the Truth About Skin Penetration
Shop the silk serum →Why a Molecule Doesn't Cross Skin Like Magic
The stratum corneum, the skin's outermost barrier, is specifically designed to block the passage of most external substances. No serum, however well formulated, entirely bypasses this natural protective barrier.
What Silk Protein Actually Does on Contact With Skin
Rather than penetrating deep to the dermis, silk protein mostly acts at the surface and in the epidermis's outer layers, forming a hydrating film that limits transepidermal water loss — a different mechanism, but just as valid as deep penetration.
"An effective serum doesn't need to reach the dermis to work — most of the hydrating benefits happen in the skin's most superficial layers.
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| Level of Action | Mechanism | Benefit |
|---|---|---|
| Stratum corneum | Hydrating film, light occlusive | Immediate comfort |
| Superficial epidermis | Water retention | Softness, radiance |
| Deep dermis | Not addressed by this type of serum | N/A |
Understanding the Mechanism Avoids Disappointed Expectations
Knowing that a hydrating serum works at the surface rather than deep down allows judging its effectiveness on the right criteria — comfort, softness, radiance — rather than on a transformation promise no cosmetic product of this kind can truly deliver.
