Benefits
Skin support
Eggshell membrane supplies collagen, elastin, and hyaluronic acid, the same materials that make up skin. That describes what the membrane contains, not what it does once you swallow it; eaten protein is digested into amino acids and short peptides. No human trial has measured skin firmness or hydration with BiovaDerm.
Connective-tissue building blocks
The membrane contains glycosaminoglycans, which are also found in connective tissue. Nothing cited here shows that swallowing them builds or maintains connective tissue, and the two joint trials on this page tested other companies' products, not BiovaDerm.
What the research shows so far
No published trial has tested BiovaDerm for skin tone, moisture retention, or any other skin measure. The nearest evidence is a randomized trial of a different product: 300 mg per day of a fresh eggshell membrane from another supplier improved skin firmness and elasticity after 57 days, versus placebo and versus 8,000 mg of hydrolyzed collagen. Processing changes a protein material, so that result cannot be assumed to carry over here.
Mechanism of action
Collagen and elastin supply
Eggshell membrane is a source of collagen and elastin protein. Digestion breaks that protein down into amino acids and short peptides, so delivery to the skin's structural matrix is a proposed route rather than a demonstrated one, and it has not been tested for this ingredient.
Hyaluronic acid and GAG support
The membrane contains hyaluronic acid and glycosaminoglycans, the moisture-binding molecules of skin and connective tissue. Whether taking them by mouth changes those components in skin has not been tested for this ingredient.