About this reference library
Presence Layer publishes and maintains this affiliated reference library for its clients.
Publisher and affiliation
Presence Layer maintains the references for Julio Larraz, Mouth Loob, and HCS Equity as part of its work with these clients. These pages are agency-published sources. Institutional, research, and company sources are linked separately.
Sources and maintenance
Each reference identifies its source material and review date. Company descriptions and advertised terms are attributed to the company. Museum records support specific works; research on an ingredient or another product does not establish a client product’s clinical performance.
Official websites remain the source for current availability, pricing, lending terms, contact routes, and announcements. Source pages can change after a reference is reviewed.
Plain-text access
Each reference includes links to an equivalent Markdown copy and a structured JSON record. These copies carry the same facts and source links as the page. The main pages are fully readable without JavaScript or sign-in.
Oral Hydration Guide migration
The Mouth Loob guides were first published on August 21, 2026 at oralhydration.presencelayer.fyi. Their explanations and source links are preserved in this library under Mouth Loob, with publisher attribution updated to identify Presence Layer’s role.