Dermatologists Warn 'Tanmaxxing' Trend Trades Vitamin D for Melanoma Risk

Tanmaxxing is a social media practice built around maximizing sun exposure and deepening skin color through prolonged outdoor sessions, tanning oils, bronzers, and gels. Some participants add tanning bed sessions. Some skip sunscreen entirely. The trend is popular among Gen Z users who post their dramatic tan lines and outdoor setups as lifestyle content.

The appeal is real. Time outdoors lifts mood, sunlight supports vitamin D production, and screens are genuinely bad for you. Nobody disputes any of that.

What the science says

New York-based board-certified dermatologist Dr. Michael Tassavor is unambiguous: "Tanning is damage. Tanfluencers sell a deep tan as a 'wellness upgrade,' but a tan isn't a glow-up — it's your skin's visible distress signal that DNA damage has already happened."

Tassavor told Fox News Digital that he has treated thousands of skin cancer patients who essentially did what tanmaxxing promotes, before the trend had a name. "Most regret it."

The World Health Organization classifies UV radiation and tanning beds as Group 1 carcinogens, the same tier as tobacco and asbestos. Using a tanning bed before age 35 raises melanoma risk by roughly 75%, according to Tassavor.

The mechanism is slow and quiet. "The damage compounds silently and shows up years later, once the easy window to intervene has closed," Tassavor said.

Two common claims behind the trend, both false

Tanmaxxing content typically rests on a pair of beliefs. Tassavor says both are wrong.

Claim 1: Skipping sunscreen produces a better, deeper tan. False. Sunscreen does not prevent tanning entirely. It reduces the UV dose, which means it reduces the DNA damage, not the cosmetic outcome in any meaningful protective sense.

Claim 2: A base tan protects you from future sunburns. Also false. A base tan offers only minimal protection against future sun exposure — negligible against a full day of unguarded sun.

The vitamin D argument

Proponents of heavy sun exposure often cite vitamin D as justification, and that concern deserves a fair hearing. Tassavor acknowledges that "vitamin D matters for bone density, and sun does give some people a genuine mood lift," but adds there is "no evidence that anyone has to go out of their way to sunbathe for it, and no evidence that diligent sunscreen use harms bone health."

Tassavor's response is practical, not dismissive: "Most of your vitamin D can come from diet and supplements, and your skin is efficient enough to top up what it needs from ordinary incidental exposure." The argument for tanmaxxing-level UV doses to hit vitamin D targets doesn't hold up when supplements and fortified foods achieve the same result without carcinogen exposure.

Sunlight is "not the enemy," Tassavor acknowledged. The problem is the deliberate, extended maximization of it.

Tanning beds are a separate, worse problem

Some tanmaxxing practitioners layer in tanning bed sessions, which the WHO has classified at the same Group 1 carcinogen level as outdoor UV. The age-35 melanoma risk figure of 75% higher applies specifically to tanning bed use. Tassavor advises avoiding tanning beds "entirely," stating there is "no safe dose" of UV exposure and that using them accelerates skin aging.

What nobody is saying

This is not a call to avoid the outdoors or to slather SPF 100 on your arms before checking the mailbox. Tassavor is explicit that routine, incidental sun exposure is fine and that chasing it compulsively is the problem. The dermatological concern is specifically about the trend's framing: that more UV equals better health, and that sunscreen is something to opt out of for a 'cleaner' result. That framing contradicts the biology.

For those who do go outdoors, Tassavor recommends using SPF 30 sunscreen and reapplying every two hours.

Skin cancer, including melanoma, has a long latency period. The tanmaxxing trend is recent enough that population-level data on whether it is accelerating skin cancer diagnoses in Gen Z specifically does not yet exist. Whether dermatologists start seeing a cohort-specific uptick in melanoma presentations tied to this generation's UV habits will be a measurable data point, but not for years. That is precisely what Tassavor is warning about: by the time the consequence is visible, the intervention window is gone.