Cosmetic or drug

The line, in one sentence

On this page9

The cosmetic definition The drug definition Hair growth is structure and function A product can be both Which half of the shelf this affects The cheap version of this check Why both definitions turn on intention What being a drug would actually mean References

Both definitions are about intended use, which means the same jar of the same material can be either one.

The cosmetic definition

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. Every one of the eight products here fits that without strain.

The drug definition

In part: articles intended for use in the diagnosis, cure, mitigation, treatment or prevention of disease, and articles other than food intended to affect the structure or any function of the body.

Hair growth is structure and function

Growing hair is something the body does. A claim that a product makes it happen is a claim about a function of the body, which places the product inside the drug definition regardless of what is in it.

A product can be both

FDA gives an antidandruff shampoo as the example: a cosmetic because it cleanses the hair, and a drug because it treats dandruff. Being a cosmetic does not protect a product from also being a drug.

Which half of the shelf this affects

In practice it is the beard products. Oils, balms and butters are where growth claims appear, and shave products are where "soothes", "heals" and "treats razor burn" appear. Aftershave is the one most likely to drift into treatment language by accident.

The cheap version of this check

Read your own front panel, your product title and your first paragraph of web copy as though somebody else wrote them, and underline every verb. Verbs are where the classification lives.

Why both definitions turn on intention

Neither definition describes a formula. Both describe what an article is intended for, which is why the statute can treat two identical jars differently and why no laboratory test will tell you which one you have. The determination is made from the presentation, and the presentation is something you write.

What being a drug would actually mean

Not a stronger cosmetic. A different regulatory regime, with approval or monograph compliance, a Drug Facts panel, and labeling rules that have nothing to do with 21 CFR 701. A grooming product marketed with a drug claim and labeled as a cosmetic is not a borderline case; it is an unapproved drug that is also misbranded.

References

FD&C Act section 201(i), the cosmetic definition: articles "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". fda.gov

FD&C Act section 201(g)(1), the drug definition, in part: "articles intended for use in the diagnosis, cure, mitigation, treatment, or prevention of disease" and "articles (other than food) intended to affect the structure or any function of the body of man or other animals". fda.gov

FDA, Is It a Cosmetic, a Drug, or Both? (Or Is It Soap?). Whether a product is a cosmetic or a drug is determined by its intended use, and intended use is established by factors including product claims, consumer expectations, and certain ingredients. A product can be both at once, as an antidandruff shampoo is. fda.gov

Written from the FD&C Act and 21 CFR parts 701 and 740, and from the catalog as it stood on 17 October 2026. Whether a particular product is a cosmetic or a drug turns on its claims and its ingredients, and that determination has consequences; nothing here substitutes for getting it right for a specific formula and a specific label.