Short answer: Vitamin C's role in skin health is documented in Nutrients (Pullar et al., 2017) — a specific, named source worth checking directly rather than taking the summary at face value.
Why naming the specific journal and authors matters
Rather than a vague "studies show" claim, naming Nutrients and the Pullar et al. 2017 citation directly gives you something concrete to verify yourself.
Why the site directly clarifies what this citation does and doesn't prove
These citations concern the individual ingredients, not the finished DermaCept product, which has not undergone independent clinical trials as a complete formula.
💡 Worth knowing: this same distinction between ingredient research and finished-product evidence is worth applying to any supplement's cited sources.