Do serums used in microneedling have to be sterile?

No. Here is what the regulations actually require, what the word rests on when a supplier uses it, and what we do instead.

Last updated: October 2026

No regulation in the United States or Canada requires a serum used in microneedling to be sterile, and no sterility certification exists for a cosmetic in either country. The rules that do exist attach sterility to the needle and the cartridge. The one product-side rule is about dispensing: a fresh portion for each client, with nothing returned to the container.

What does the regulation require?

No cosmetic sold in the United States or Canada is a sterile product. No sterility certification exists for a cosmetic in either country, FDA and Health Canada do not approve cosmetics, and no regulation requires a topical used in microneedling to be sterile.

Sterility is a regulated state for drugs and devices, established by a validated process and confirmed by testing to a pharmacopoeial method. Cosmetics are held to a different standard: safety under normal use, good manufacturing practice, and microbiological limits and preservative efficacy testing. A serum can meet every one of those and still not be "sterile", because sterile is a claim about a product category it does not belong to.

Where do the microneedling rules apply?

The rules that do exist are about who performs the procedure and how, not about the serum. Public-health guidance in Canada and state boards in the United States attach sterility to the needle and the cartridge. The one product-side rule is about dispensing: a fresh portion for each client, and nothing returned to the container.

Whether microneedling sits within your scope of practice is set by your state or provincial board, not by us, and it varies considerably. California prohibits skin penetration by estheticians entirely. Texas treats penetration of the dermis as a medical procedure requiring physician delegation. Other states permit it under a depth cap.

Health Canada's final notice of 10 April 2026 states that a product is not consistent with a cosmetic if it is represented to be administered in a way that facilitates percutaneous absorption, and gives microneedling and injection as its examples. FDA takes the same view of a topical promoted together with a microneedling device. That is why we make and sell our ampoules as professional leave-on cosmetic serums, publish no needling protocols or depths, and leave the procedure where it belongs: with the professional.

What does "sterile" on a label rest on?

Across the professional serum market, the word "sterile" appears without a published test result, sterilization method or cleanroom classification behind it. We state exactly what is sterilized and what is not.

Three questions settle it with any supplier: which component was sterilized and how; what test result supports the word; and whether the word describes the container or the serum inside it. A supplier who answers all three does not need the adjective.

Checklist: Choosing a serum for a microneedling practice

What does Vegalab do instead?

The vials and stoppers are sterilized before filling. Each ampoule is filled and sealed immediately under a re-enterable stopper, so it is drawn from rather than opened. The serum inside is a cosmetic, not a sterile pharmaceutical.

What we can tell you is what the format is built for. A sealed ampoule drawn through a septum, one portion per treatment, is designed for the treatment room: post-procedure, on a compromised barrier, after resurfacing, wherever a fresh unopened portion matters more than a bottle that has been open for three months.

Why is the serum itself not sterilized?

Each of the three ways to sterilize a liquid would remove something the Hyaluronic Skin Repair formula is built on. Filtration through a 0.22 micron membrane holds back the larger capsules of the encapsulation system along with any microbes. Heat breaks down hyaluronic acid, along with the asiaticoside and madecassoside that give centella asiatica its soothing character. Irradiation cuts hyaluronic acid into shorter chains. A sterile version of that serum would be a weaker one.

Key takeaways

No regulation in the United States or Canada requires a topical used in microneedling to be sterile.
Sterility is a regulated state for drugs and devices, set by a validated process and confirmed by testing to a pharmacopoeial method.
Microneedling rules attach sterility to the needle and the cartridge; the product-side rule is a fresh portion for each client.
Scope of practice for microneedling is set by each state or provincial board and varies considerably.
Ask any supplier which component was sterilized and how, what test result supports the word, and whether it describes the container or the serum.

Questions professionals ask

Does a serum used in microneedling have to be sterile?

No. No regulation in the United States or Canada requires it, and no sterility certification exists for a cosmetic in either country. The rules that exist attach sterility to the needle and cartridge and govern who may perform the procedure.

Is the Vegalab ampoule sterile?

The vials and stoppers are sterilized before filling. Each ampoule is filled and sealed immediately under a re-enterable butyl stopper and an aluminum crimp, and is drawn from rather than opened, so the contents are not exposed to air across all three applications. The serum is a preserved cosmetic formulation; no regulation in the United States or Canada requires a topical used in microneedling to be sterile.

Can these be used with microneedling or nano infusion?

We make and sell these as professional leave-on cosmetic serums, and we do not publish needling protocols or depths.

What does "sterilized sealed ampoule" mean?

It means the glass and the stopper were sterilized before filling, the ampoule was filled and sealed immediately, and it is drawn through the stopper rather than opened. It does not mean the serum is a sterile product, and we do not describe it as one.

Is Vegalab registered with FDA? Is this product FDA approved?

FDA does not approve cosmetics. Not ours, not anyone's. There is no FDA approval, no FDA certification and no FDA certificate for a cosmetic product anywhere in the United States. FDA's own words are that cosmetic registration and listing "is neither a cosmetic approval program nor a promotional tool", and that FDA does not issue certificates for cosmetics. What does exist, since the Modernization of Cosmetics Regulation Act, is a mandatory filing: facilities register, and products are listed with their ingredients. It is not a review, an endorsement or a quality mark. Vegalab's facility registration and product listing have been filed. What actually answers your question is documentation, and we will send any of it on request: the full ingredient declaration, and our declaration of conformity to ISO 22716, the international standard for cosmetic good manufacturing practice.

Can you use a regular serum when microneedling?

No regulation in the United States or Canada requires the topical used in microneedling to be sterile, and the procedure sits with the professional who performs it. Health Canada's notice of 10 April 2026 states that a product represented to be administered in a way that facilitates percutaneous absorption, with microneedling as an example, is not consistent with a cosmetic. FDA takes the same view of a topical promoted together with a microneedling device.

What does sterile mean on a label?

Sterility is a regulated state for drugs and devices, established by a validated process and confirmed by testing to a pharmacopoeial method. Cosmetics are held to a different standard: safety under normal use, good manufacturing practice, microbiological limits and preservative efficacy testing. Across the professional serum market, the word often appears without a published test result, sterilization method or cleanroom classification behind it.

Why not sterilize an encapsulated hyaluronic acid serum?

Each of the three ways to sterilize a liquid would remove something such a formula is built on. Filtration through a 0.22 micron membrane holds back the larger capsules of the encapsulation system, heat breaks down hyaluronic acid, and irradiation cuts hyaluronic acid into shorter chains.