Is it a cosmetic or a drug? How to tell from the label — general information

Educational information only — not a skin assessment, treatment, diagnosis, product recommendation, or product service.

Two products can sit side by side on the same shelf — a deodorant next to an antiperspirant, a plain moisturizer next to one with SPF — and belong to different legal categories with different rules. This article is general label-literacy information about how US law sorts everyday personal-care products into cosmetics, over-the-counter (OTC) drugs, or both. It doesn't evaluate products or ingredients, and it isn't advice about what anyone should use.

Two definitions, one deciding factor

US law defines a cosmetic by what it's for: an article "intended to be rubbed, poured, sprinkled, or sprayed on, introduced into, or otherwise applied to the human body … for cleansing, beautifying, promoting attractiveness, or altering the appearance." Moisturizers, perfumes, lipsticks, shampoos, makeup, and deodorants all fall here.

A drug is also defined by purpose: an article intended for use in connection with disease, or intended to affect the structure or any function of the body.

The deciding factor is intended use — established by things like labeling, marketing, and how a product is presented — not by where it sits in a store or how it's packaged.

The fastest tell on the label: a Drug Facts panel

US OTC drug products carry a standardized Drug Facts panel: active ingredient(s) and their purpose, uses, warnings, directions, and inactive ingredients, in a fixed format set by federal regulation. A cosmetic-only product carries an ingredient declaration (the INCI-style list, in descending order of predominance) but no Drug Facts panel.

So turning the package over answers most of the question: if there's a Drug Facts panel, the product — or part of what it does — is regulated as an OTC drug. If there's only a cosmetic ingredient list, it's a cosmetic.

Some products are both

A product can carry two intended uses at once, and then it has to follow both sets of rules. Familiar examples:

• Deodorant vs. antiperspirant. A deodorant that addresses odor is a cosmetic. An antiperspirant is an OTC drug, because reducing perspiration is about how the body functions. An "antiperspirant deodorant" is both.
• Shampoo vs. antidandruff shampoo. A shampoo that cleans hair is a cosmetic; an antidandruff version carries a drug function as well, so it's both.
• Moisturizer with SPF. A moisturizer is a cosmetic, and in the US sunscreen is regulated as an OTC drug — so the combination is both. As with any sun-related use, terms like SPF, broad spectrum, and water resistance are defined on the product's own Drug Facts panel, and that label is the reference to follow.
• Toothpaste. A version with a fluoride active ingredient carries a Drug Facts panel; a paste without one is a cosmetic.

On combination products you'll typically see both systems on one package: a Drug Facts panel for the drug side, plus the cosmetic-style ingredient list.

What about soap?

"Soap" is its own small category. A traditional bar made of alkali salts of fatty acids and marketed only as soap for cleansing falls outside FDA's cosmetic rules (it's overseen by the Consumer Product Safety Commission). Most modern body washes and liquid "soaps" are detergent-based, which makes them cosmetics — and any cleanser presented with a drug purpose is regulated as a drug.

What the category does — and doesn't — tell you

Neither category is a quality ranking. "Drug" doesn't mean stronger or better, and "cosmetic" doesn't mean weaker — they're different legal lanes with different obligations. Premarket review differs too: cosmetic products and most cosmetic ingredients (color additives aside) don't go through FDA premarket approval, while OTC drug products must conform to the federal rules for their category. Recent law (the Modernization of Cosmetics Regulation Act of 2022) added new requirements for cosmetics, but the two lanes remain distinct.

A label can tell you which lane a product is in and what its own directions say. It can't tell you what anyone should use. For questions about a specific product or your own situation, the product's own label and a licensed professional — such as a dermatologist or pharmacist — are the right places to take them.