Cannabis Sunscreen, Tested: What Safety Standards Mean for You

When it comes to marijuana-infused sun care products, testing requirements extend beyond typical sunscreen standards. These products occupy a unique space where cosmetics, over-the-counter (OTC) drugs, and state-level cannabis regulations overlap. For consumers, understanding these layered standards is key to choosing products that are both safe and effective.

In the United States, any product marketed as a sunscreen is classified by the Food and Drug Administration (FDA) as an OTC drug. Under Title 21 of the Code of Federal Regulations (21 CFR §201.327), manufacturers must verify their product’s sun protection factor (SPF) through standardized testing. This includes SPF efficacy tests, broad-spectrum UVA testing, and, when applicable, water resistance evaluations. These tests confirm that a sunscreen performs as labeled and that its protection levels are consistent with FDA-approved benchmarks.

Internationally, many companies also adopt ISO 24444, a global standard for in-vivo SPF testing. By following both FDA and ISO protocols, brands can ensure consistent and comparable SPF ratings across different markets. This dual compliance is particularly important for cannabis skincare companies seeking consumer trust and legitimacy in a competitive wellness sector.

Beyond sun protection standards, cannabis-infused sun care products must also satisfy state-specific cannabis testing laws. Because cannabis remains federally illegal, testing is governed at the state level, and requirements can vary widely. In most legal states, topicals containing cannabinoids—such as lotions, balms, or sunscreen sprays—must undergo laboratory analysis by a state-certified facility. These tests typically assess cannabinoid potency and screen for contaminants including pesticides, heavy metals, residual solvents, microbial pathogens, and mycotoxins.

California, Colorado, and Oregon, for example, each maintain their own testing panels and permissible limits for contaminants. As a result, a cannabis sunscreen sold in multiple states may undergo slightly different testing protocols depending on local regulations. For consumers, this makes it especially important to review Certificates of Analysis (COAs) provided by the brand. A credible COA should match the batch number on the product and outline detailed test results, verifying that the product meets state safety standards.

Marijuana-based sunscreens must also demonstrate microbiological safety. Because sunscreen formulas often contain water and natural extracts, they are prone to microbial growth. To address this, manufacturers typically perform preservative efficacy (challenge) tests, such as USP <51>, to ensure the formula resists contamination over time. This helps maintain both the safety and performance of the sunscreen during its shelf life.

Regulatory compliance extends to labeling as well. The FDA prohibits cannabis sunscreen companies from making medical or therapeutic claims that could classify the product as an unapproved drug. Instead, legitimate brands use neutral terminology—such as “soothing,” “hydrating,” or “anti-inflammatory”—to remain within cosmetic guidelines.

Ultimately, the strict testing standards for marijuana sun care products serve a single goal: protecting the consumer. By ensuring accurate SPF ratings, verifying purity through state-mandated cannabis testing, and maintaining microbial stability, these products provide confidence that innovation in cannabis skincare is matched with safety and science.