LABEL LITERACY
What ingredient list order actually tells you
Understand why the order of cosmetic ingredients is useful context but cannot reveal an exact formula.
Read the list from beginning to end
Under US cosmetic labelling rules, ingredients are generally declared in descending order of predominance. There are exceptions, including flexibility for ingredients at one percent or less and for color additives. This means position is useful context, not a precise concentration calculator.
Do not convert position into percentages
A label does not provide enough information to assign a percentage to every ingredient. You cannot reliably locate the one-percent boundary simply by counting names. Preserve the order when scanning or copying so you can review the original declaration later.
Keep marketing claims beside the list
If the front of a package highlights an ingredient, locate that ingredient in the full declaration. Note what the packaging actually states and what it leaves unspecified. For a concentration question, seek a clear statement from the manufacturer rather than assuming that a higher position guarantees a better product.
Your practical checklist
- Keep the original ingredient order.
- Do not infer exact percentages from list positions.
- Distinguish a declared percentage from a scanner inference.
Reference: FDA: Cosmetics Labeling Guide