Individual products carrying the HALO mark are assessed down to the ingredient level: every raw material's source, supplier and halal status is declared and reviewed before the mark is granted.

Certified products are listed in the public HALO catalogue with their certificate and a scannable QR code, so retailers and consumers can confirm authenticity at the shelf.

Product scope changes — new recipes, new ingredients, new production lines — must be declared to HALO, and may trigger a review to keep the certificate truthful.