Reference
Halal Ingredient Index
Type any ingredient from the back of a pack. We publish what it is made from and whether we will formulate with it — including the answers that are inconvenient for us.
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Hydrolyzed Collagen
A protein taken from the hide, bone or scales of animals and fish, used as a film-forming humectant.
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Hydrolyzed Keratin
A protein fragment obtained from wool, horn, hoof or feathers, used to condition hair and the skin barrier.
Why this index exists
An INCI list is a legal document written in Latin and colour-index numbers, and it is the only honest way to check a cosmetic. It is also unreadable unless someone tells you what the names mean. This index is that translation, published in full, whether or not it flatters us — the list of what we never use is the part of it that costs us something.