Microneedling in Panama: cosmetic serums under the skin and the law

A practical question for the Panamanian clinic

Any aesthetic physician in Panama has seen the scene: microneedling is done and a "cosmetic" serum (vitamin C, tranexamic acid, exosomes, growth factors) is applied to the freshly punctured skin. This article asks a narrow question: when a needle carries that serum into the dermis, is it still a topical product? We do not claim any brand breaks any rule; we describe what studies document, what the FDA has said and what Panamanian rules say.

What the safety evidence says

The systematic review by Chu and colleagues (Dermatologic Surgery, 2021) included 85 articles. It concludes microneedling is a relatively safe therapy and that most events are minimal and resolve on their own¹. The most common events are transient and last up to 7 days:

• transient erythema and edema, and pain¹;
• postinflammatory hyperpigmentation, dry skin or exfoliation, lymphadenopathy and irritant contact dermatitis¹;
• as serious persistent effects: postinflammatory hyperpigmentation, tram-track scarring and granulomatous reactions¹.

Risk rises with active infection, darker skin and metal allergy. The authors also urge caution when the procedure is combined with products not approved for intradermal use¹. That last phrase is what connects the literature to the regulatory debate.

When the serum stays in the dermis

In 2014, a University of Utah team described in JAMA Dermatology three women with open facial granulomas after microneedle therapy. Two had received the same cosmetic moisturizer during the procedure; biopsy showed foreign-body granulomas with negative cultures, and the first two patients had a positive patch test to the product. The authors explain the mechanism this way: in cosmetic practice cosmeceuticals are applied before microneedling, which "results in intradermal tattooing" of the topical product⁷.

In 2022, a University of Calgary dermatology team reported a 49-year-old woman with annular plaques on her cheek after a microneedling session in which a vitamin C cosmeceutical had been applied beforehand; biopsy confirmed non-necrotizing granulomatous dermatitis, with negative cultures and a negative sarcoidosis workup. They note only 10 earlier cases existed, that the higher risk may relate to peri-procedure cosmeceuticals, and that it is an "unregulated" procedure⁶.

Another category is infection. A 2024 report describes periocular Mycobacterium chelonae infection after fat transfer with subdermal micro-needling and fractional radiofrequency: the authors urge caution when combining procedures because the breakdown in skin integrity may potentiate infection⁸. It is a combined case, not isolated microneedling, and should not be extrapolated.

What the FDA says (and what cannot be extrapolated)

The FDA's page on microneedling devices (current as of October 15, 2025) states that these devices are "not approved" to deliver cosmetics, topical medications, vitamin solutions, drugs or blood products such as platelet-rich plasma into the skin; that reusing the needle cartridge is unsafe; and that the agency is aware of several devices that are not legally marketed². It lists infection, pigmentation changes and herpes cold sore reactivation among the less common risks².

On October 15, 2025, the FDA also issued a safety communication on radiofrequency microneedling: it is aware of burns, scarring, fat loss, disfigurement and nerve damage, and says it is "a medical procedure, not a cosmetic treatment"³. These are US rules and authorizations: they do not bind Panama, but they show how the reference regulator treats the device and what is introduced with it.

What Panamanian rules say

Law 419 of February 1, 2024 defines a cosmetic as a "product or formulation for local application used on the superficial parts of the body," meant to clean, perfume, change appearance, protect or keep in good condition; and subjects cosmetics to sanitary registration for import, distribution and sale⁵.

In its Note 010/SCV/DFV/DNFD-2024 (October 14, 2024), the DNFD recalled three rules: a cosmetic to which therapeutic properties are attributed because of its composition must be registered as a medicine (RTCA 71.03.35:21); cosmetic labeling may not claim therapeutic properties or products specific to treating skin dysfunctions (RTCA 71.03.36:21); and article 208 of Executive Decree 27 of 2024 states that "all products that indicate the cure of a disease or any product that can be ingested, inhaled or injected into the human body are not considered cosmetic products, since these must only be applied topically"⁴. The note also asks that undesirable effects of cosmetics be reported to the Cosmetovigilance Section through a Ministry of Health form⁴.

Here is the open question, and it is our inference, not a DNFD position: article 208 speaks of what can be "injected," and microneedling is not an injection. But the 2014 report describes the result as an "intradermal tattooing" of the product⁷, and Chu warns about products not approved for intradermal use¹. If a serum applied with a needle reaches the dermis, it remains to be clarified by which route it is being used. We have found no public DNFD statement that settles it.

The gap: who may perform microneedling in Panama

We looked for a Panamanian rule that names microneedling, dermapen or dermaroller, or says who may perform it, and we did not find one. The closest is a 2009 Panamá América report on the Ministry of Health's regulation of beauty salons: it bans invasive treatments there such as mesotherapy, medium and deep peels, collagen and other filler infiltration, and requires surgical treatment to be done in establishments staffed by health professionals authorized by law. Microneedling does not appear on that list¹⁴. Law 491 of October 17, 2025 reserves modeling and filler substances for physicians specialized in Dermatology or Plastic Surgery, but it regulates fillers, not microneedles¹⁵.

The gap has practical consequences. In a May 2023 case in Bella Vista, the Ministry explained that a spa operating notice "has no legality" for performing infiltrations; the clinic faced permanent closure and a complaint for illegal practice of the profession¹⁶. That case does not mention microneedling, and we do not know how the Ministry would treat a microneedling procedure at a spa. Asking the Ministry of Health or the DNFD in writing is the way out of the doubt.

What recent serum series show

The 2025-2026 literature combines microneedling with exosomes, tranexamic acid and topical anesthetics, but in small series. A Korean pilot of 14 women, single-arm, used vulvar microneedling with a ginseng exosome; its own authors call it preliminary and "hypothesis-generating," and no serious adverse events were observed over 6 weeks⁹. A Chinese retrospective series of 27 melasma patients (microneedling plus tranexamic acid-arbutin) reported a 37.58% drop in mMASI, with transient erythema, burning and petechiae and no infections; no control group¹⁰. A retrospective analysis of 26 patients compared two topical anesthetics in facial and neck microneedling, with formulation, site and occlusion changing at once; the authors call for randomized studies¹¹.

What the physician can do today

• Check the product label and data sheet: does it declare a topical or intradermal route? A cosmetic cannot claim therapeutic properties⁴.
• Apply the exclusion criteria from the literature: active infection, cold sores, metal allergy, dark skin at risk of hyperpigmentation¹².
• Record the exact product and lot; for a delayed reaction (nodules, plaques) consider biopsy and cultures⁶⁷.
• Report undesirable effects to the Cosmetovigilance Section with the Ministry of Health form⁴.

Context on our blog: sanitary registration and the double standard in aesthetics, who may inject fillers and toxins in Panama and eyelash serums: cosmetic or drug.