Serious vs Non Serious Adverse Events Under MoCRA

A customer emails you saying her face got a little red after using your new serum. Another customer's family calls to say she ended up in the emergency room after an allergic reaction to a product you sold. Under MoCRA, those two emails do not trigger the same clock, and mixing them up is a common and avoidable mistake.

MoCRA, the Modernization of Cosmetics Regulation Act passed in 2022, brought adverse event handling into sharper focus for US cosmetic sellers alongside facility registration, product listing, a named responsible person, and safety substantiation. The reporting obligation splits cleanly into two tiers, and knowing which tier an incoming complaint falls into determines how fast you have to act.

What counts as serious

A serious adverse event, under MoCRA's framework, is one that results in an outcome like:

• Death
• A life-threatening experience
• Inpatient hospitalization
• A persistent or significant disability or incapacity
• A congenital anomaly or birth defect
• An infection
• Significant disfigurement, including serious and persistent rashes, second- or third-degree burns, significant hair loss, or persistent or significant alteration of appearance
• Any outcome requiring medical or surgical intervention to prevent one of the above

A serious adverse event has to be reported to the FDA within 15 business days of the responsible person receiving the report. That is a real deadline, not a suggestion, and it starts from when your company learns about it, not from when the reaction happened.

What counts as non serious

Non serious adverse events are the more common, lower-severity reports: mild irritation, transient redness, a rash that resolves without medical treatment, an itching sensation that goes away after discontinuing use. These still matter and still have to be recorded, but they do not carry the same 15-business-day external reporting trigger. Instead, they fall under MoCRA's recordkeeping requirement, meaning you need to maintain records of adverse events, serious and non serious, and be able to produce them.

A side-by-side to keep on hand

Example report	Classification	What you do
"My skin felt a little itchy for an hour"	Non serious	Record it; no 15-day external report required
"I got a mild rash that cleared up in two days without treatment"	Non serious	Record it
"I had a severe allergic reaction and went to urgent care"	Serious (medical intervention involved)	Report to FDA within 15 business days of receipt, plus recordkeeping
"I developed second-degree burns from the product"	Serious	Report within 15 business days
"I was hospitalized overnight after using the product"	Serious	Report within 15 business days

Why the classification decision has to happen fast

The 15-business-day clock starts when the responsible person receives the report, which means the classification judgment call (serious or not) needs to happen close to immediately, not after a few weeks of back-and-forth with the customer trying to gather more details. In practice, this means:

• Having a simple intake process so customer service or a support inbox flags anything that sounds medical (hospital, ER, doctor visit, burns, lasting marks) right away
• Not waiting for a customer to send photos or medical records before starting the internal clock; the clock starts on receipt of the report, and severity can be assessed and, if needed, updated as more information comes in
• Keeping records of every adverse event report, not just the serious ones, since MoCRA's recordkeeping obligation covers the full range

Where this fits with everything else MoCRA asks for

Adverse event handling is one piece of a broader MoCRA framework that also requires facility registration and product listing with the FDA and a named responsible person, with some small businesses exempt from the registration and listing pieces specifically. Safety substantiation and adverse event recordkeeping are not part of that small business exemption in the same way, so it is worth checking your own qualifying status rather than assuming size alone gets you out of every MoCRA obligation.

Cosmetic Comply's current build focuses on Canadian notification filing, with the US MoCRA side of the platform on the way. In the meantime, a simple written process for triaging incoming complaints as serious or non serious, with a clear internal owner and a documented "clock start" moment, is the single most useful thing a small US brand can put in place today.