The Most Powerful Skincare Routine Starts in the Kitchen Inside-out beauty — the growing consumer conviction that nutrition, supplements, and ingestible products are as important to skin, hair, and nail health as topical products — is accelerating from wellness niche into mainstream commercial category. Collagen in stacked water, protein in daily snacks, longevity actives crossing from supplements into beauty formulations, and Cosmoprof 2026's Press Reset trend identifying ce