How to Report a Hair Product Reaction to the U.S. FDA

If a hair dye, relaxer, shampoo or styling product causes an unexpected reaction or has a quality problem, stop using it and contact a healthcare professional when needed; consumers can report the event to the U.S. FDA through its cosmetic complaint guidance and MedWatch routes. A report records a concern for regulator review. It does not by itself prove the product caused the reaction or replace medical care.

What to record before you report

Keep the package if available and write down the exact product and shade name, manufacturer or responsible company shown on the label, lot or batch code, ingredient panel, where and when it was bought, when it was first and last used, and when the problem began. Save dated photos of the package and, if appropriate, the visible product problem or reaction. Note how the product was used and whether the label directions were followed. Do not post private medical records or identifying details publicly.

Consumer reporting steps

• Choose the consumer route: open the MedWatch Online Voluntary Reporting Form and use the Consumer/Patient option (Form FDA 3500B). Form 3500 is the health-professional version; industry mandatory reports are a separate route.
• Describe what is known: provide the product identity, use dates and problem details from your record. FDA’s consumer form says to provide as much information as possible even if some information is missing. Do not guess a batch number or present suspected causation as established.
• If you prefer a paper or telephone route: obtain the current Form FDA 3500B from FDA and follow the mail or fax instructions supplied with it. FDA’s cosmetic complaint page also lists 1-888-723-3366, Option 4, for cosmetic product complaints.
• Keep your own record: our editorial suggestion is to save a copy of what you submitted and any confirmation or reference supplied by FDA. Keep the product available, but do not send it to FDA unless requested. A saved draft or an opened form is not evidence that a report was submitted.

Consumer reports and company duties are different

The consumer route is voluntary. Under U.S. MoCRA, the responsible person for a cosmetic must submit certain serious adverse event reports to FDA within the required period. That industry duty is not the same as a consumer making a voluntary report. The FDA defines serious outcomes in its guidance; readers should use the current agency instructions rather than infer a legal category from a symptom list.

What an FDA report can and cannot tell you

A report can provide the agency with information to assess a product problem or adverse event. It is not a published finding, a recall notice, a safety verdict, or proof of causation. A report count also cannot be treated as an incidence rate because reporting does not establish how many people used the product. If symptoms are severe or worsening, seek medical care rather than waiting for a regulator response. This article is about the United States; other countries use different reporting systems.

Official sources and editorial limit

Sources rechecked 5 October 2026: FDA: How to Report a Cosmetic Product Related Complaint; FDA: MedWatch Forms for Safety Reporting; FDA: Modernization of Cosmetics Regulation Act (MoCRA). We did not submit a report or investigate any named product. Editorial view: a useful complaint record preserves product identity and dates without turning an unverified suspicion into a conclusion.