A walkthrough of how a generic AI formula checker can confidently clear an ingredient that the Cosmetic Ingredient Hotlist actually restricts.
When an online marketplace emails asking for proof of cosmetic compliance, here is exactly which CNF confirmation to send and how to word your reply.
An SDS is built for workplace and transport safety, not consumer allergen disclosure. Here is what each document actually tells you and what it leaves out.
A realistic face serum formula run through AICIS categorisation, from Inventory checks to introduction category, decision by decision.
China's cosmetic rules require a domestic responsible person for imported products, and that entity carries real liability. Here is what the role means in practice.
What MoCRA actually requires of foreign cosmetic manufacturers when it comes to a US point of contact, and what that person is on the hook for.
How to work through the MoCRA small business exemption for facility registration and product listing, and which obligations it does not waive.
Why your formula's INCI percentages should sum to 100, how water q.s. handles rounding, and what actually goes wrong when they don't.
How leave-on and rinse-off products change what a safe essential oil percentage looks like, with the allergen math makers actually need.
MIT's rinse-off restriction is tighter than most preservatives, and leave-on use is effectively unworkable. Here is what soap and wash makers need to check.
Percentages should stay flat when you scale a batch, but a few common shortcuts quietly change them. Here is where that happens.
Clearing up whether the brand owner, contract manufacturer, or distributor is the MoCRA responsible person, with examples for each setup.
How makeup colourants and pigments get categorised under AICIS, and where listing conditions quietly restrict which pigments you can actually use.
A worked walkthrough of assembling MoCRA safety substantiation for a small-batch product line, from existing ingredient data through toxicologist review.
How to identify, break down, and correctly list a Geogard-style dehydroacetic acid and benzyl alcohol blend on your ingredient filing.
What to check on preservatives and colorants before you file a mascara notification, and why eye-area products get extra scrutiny.
The percentage you weigh out and the percentage of an active substance in your finished product are two different numbers. Here is how to keep them straight.
How glycerin arriving in two supplier blends gets summed into one correct line on your final ingredient list, with a worked example.
What a foundation or eyeshadow maker needs to declare about permitted colours, CI numbers, and area-of-use restrictions on a CNF.
What the MoCRA small business exemption actually covers for micro-sellers, and the common assumptions about hobby scale that don't hold up.
Why salicylic acid's permitted level changes depending on whether your product stays on the skin or gets rinsed off, and what to check before filing.
The statutory definition that decides whether you file a Cosmetic Notification Form at all, plus the edge cases that trip up new sellers.
Why a single Parfum entry used to be enough, what changed, and how the new allergen disclosure thresholds affect your ingredient list.
How sodium lactate and other bar hardeners should show up on your ingredient list, and why the amount used still matters.