Which Warnings Are Required on a Cosmetic Label

A maker once told me their aerosol dry shampoo passed every ingredient check they could think of, and they still got flagged, not for the formula, but for a missing caution statement on the can. Warnings aren't decoration on a cosmetic label. For certain product types, they're a required part of what makes the label compliant at all.

Warnings depend on the product type, not the ingredient list

It helps to separate two different things a label has to get right. One is disclosing what's in the product, your ingredient list in INCI names, which is really about transparency and traceability. The other is warning the consumer about how to use the product safely, and that second category is driven by the product's physical form and function, not just its ingredients.

An aerosol can needs different warnings than a jar of cream, regardless of what's inside either one. An eye-area product needs different cautions than a body lotion, even if they share several ingredients.

Aerosols and pressurized containers

Aerosol cosmetics carry inherent handling risks separate from the formula, since they're pressurized and often contain flammable propellants. Products in this category typically need cautions addressing:

• Not puncturing or incinerating the container, even when it appears empty
• Not exposing the container to heat or storing it above a certain temperature
• Not spraying near open flame or ignition sources, particularly relevant for products with flammable propellants
• Keeping the product away from eyes if it's not designed for eye-area use

The exact required wording and its placement are set by Health Canada's labeling requirements, so this is a case where checking current guidance directly matters. The point here is the category: pressurized, potentially flammable products carry a distinct warning obligation tied to the container, on top of any warning tied to the formula itself.

Flammable liquids and sprays

Separate from pressurized aerosols, some pump sprays or liquid products contain flammable solvents, certain alcohol-based products being a common example. These typically need a flammability caution even without the pressurized-can risks, since the hazard here is the liquid or vapor itself near an ignition source rather than container rupture.

Don't assume that because a product isn't an aerosol, it's automatically exempt from a flammability warning. If your formula includes a meaningfully high concentration of a flammable solvent, that's worth checking against current labeling guidance regardless of the delivery format.

Eye-area products

Products intended for use near the eyes, certain serums, some mascaras and eyeliners, and specialty eye creams among them, often carry cautions specific to that use, commonly addressing:

• Discontinuing use if irritation occurs
• Avoiding direct contact with the eye itself, as distinct from the eye area, where the product is genuinely designed to be applied near but not into the eye
• Seeking medical attention if the product does get into the eye and irritation persists

This category sits somewhat separately from general cosmetic caution statements, since eye-area application carries a distinct risk profile that Health Canada's guidance treats accordingly.

Fragrance allergen disclosure is coming, and it changes labels too

Separate from these physical hazard warnings, fragrance allergen disclosure requirements are being phased in on a defined timeline. List 1, the original fragrance allergen set, becomes mandatory on the CNF and the label on April 12, 2026, and List 2, an expanded set aligned with international lists, follows on August 1, 2026. The disclosure trigger depends on whether the product is leave-on or rinse-off: above 0.001 percent, or 10 parts per million, for leave-on products, and above 0.01 percent, or 100 parts per million, for rinse-off products. Common allergens include limonene, linalool, citronellol, geraniol, eugenol, and coumarin, all of which occur naturally in a wide range of essential oils, so a fragrance-free-sounding formula built on essential oils can still trigger disclosure.

If you're revisiting your label artwork anyway to fix a missing caution statement, it's a reasonable moment to also confirm your fragrance allergen disclosure is ready for these deadlines rather than treating it as a separate project later.

Bilingual requirements apply to warnings too

Every required caution and warning statement on a Canadian cosmetic label needs to appear in both English and French, same as the rest of the mandatory label content. A warning that only exists in one language isn't a complete warning under Canadian labeling rules, so double check your translated caution statements are accurate, not just present, particularly for nuanced safety language like "discontinue use if irritation occurs."

Building your warning checklist product by product

Rather than trying to memorize every warning type, it's more reliable to build a short checklist per product based on its physical form and function: Is it pressurized? Does it contain flammable solvents? Is it designed for eye-area use? Does it contain fragrance allergens above the disclosure threshold? Answer those four questions honestly for each product, and you'll know which warning categories actually apply before you finalize your label artwork.

Cosmetic Comply's notification process is built around exactly this kind of product-specific check, flagging where a caution statement, an allergen disclosure, or a labeling detail needs attention before your Cosmetic Notification Form goes out the door.