Collagen powders and drinks promise firmer skin from within. We look at the current research and the regulatory situation on health claims, and show which skincare targets the skin's structure.

Copper peptides such as GHK-Cu are considered the next big anti-ageing ingredient. We take a critical look at the research – and at why the synthetically produced peptide is a fundamental problem for certified natural cosmetics.

Retinal is considered the stronger, faster version of retinol. We look at how much of that is backed by studies, what the new EU limits since November 2025 mean – and why neither is an option for certified natural cosmetics anyway.