What's Inside a Modern Tanning Pill? Every Ingredient, Explained

Three Products, One Name

Tanning pills have been sold since the 1980s. Some of the earliest versions used ingredients that could cause problems for users. Modern formulas have moved past that, but the name "tanning pill" still gets used loosely for very different products today.

Accelerators are one of those products. They try to speed up how fast skin tans in the sun, usually by supplying extra tyrosine, sometimes with copper, PABA, or B vitamins added.

Carotenoid supplements are a different product entirely. Instead of relying on the sun, they build color from natural pigments found in food, with no UV exposure required.

Tan Accelerators: The Claim Is "Boost the UV Effect"

Accelerators usually contain tyrosine, sometimes with copper, PABA, or B vitamins. The theory: tyrosine helps build melanin, so more of it should mean a faster tan.

This theory doesn't hold up. Tyrosine pills haven't been shown to work, and none are FDA-approved ^[1]. There's no good evidence that accelerators, as a category, speed up tanning at all ^[2]. Copper runs on the same logic, with the same result: no measurable effect.

Even in the best case, an accelerator still needs UV exposure to do anything, since it's speeding up melanin, not replacing it. That's one more mark against it: UV is also what ages skin over time.

Carotenoid Supplements: Three Food Pigments, No UV Needed

These supplements work differently. They don't push skin to make more melanin. They add a second pigment from food instead. No sun needed.

Three food pigments make up a carotenoid supplement: lycopene, astaxanthin and beta-carotene. Lycopene is the red pigment in tomatoes. Astaxanthin is a red pigment from microalgae. It's expensive and hard to stabilize, so most formulas skip the natural kind and use cheap synthetic astaxanthin instead, made from petrochemicals; European regulators have assessed both forms as safe within a daily limit, but the skin research and the antioxidant comparisons were done on the natural form ^{[3, 4]}. Beta-carotene is the golden pigment in carrots. Alone, it's the one most likely to turn a result orange, since it's cheap and easy to overuse. Paired with the two red pigments above, it does its real job: balance.

Together at the right doses, these three are close to a gold standard for tanning. Getting all three right, natural high quality astaxanthin especially, costs more than most formulas bother with.

The Oil Carrier Isn't Filler

Carotenoids are fat soluble, which changes how they need to be handled. Taken with a fat-containing meal, absorption runs several times higher than without one ^[5]. Sealed inside an oil-filled softgel, carotenoids also avoid the open air that causes them to oxidize and break down over time ^[6]. The oil isn't padding around the active ingredients. It's part of how they work and how long they last.

Beyond the Glow: Carotenoids Do More Than Color Skin

Carotenoids aren't just pigments. They're antioxidants, and astaxanthin in particular is considered one of the strongest known antioxidants studied ^[4]. That property isn't specific to tanning. It's a reason these ingredients show up in general nutrition research well outside the tanning category. A carotenoid supplement is doing something on the days nobody's looking at a tan, too.

Tan accelerators don't carry the same secondary benefit. Tyrosine and copper are common nutrients, but taking them in pill form for a tanning effect doesn't add anything beyond what a normal diet already provides.

What the Best Formula Looks Like: The One 76% of People Prefer

Put the categories side by side and the differences aren't subtle. Old-style pills used a synthetic dye at doses that cause real harm. Accelerators rest on a theory that hasn't held up, and even in the best case still require UV exposure to do anything. Carotenoid supplements are the only category that builds color without the sun and carries genuine nutritional evidence behind the ingredients themselves.

Within carotenoid formulas, the differences matter too. The best ones use natural, algae-derived astaxanthin, not the synthetic version. They pair red carotenoids with beta-carotene instead of leaning on beta-carotene alone, since that's what keeps the result golden instead of orange. In a study comparing carotenoid-based skin coloring directly to a UV suntan, about 76% of people preferred the carotenoid result ^[7]. A formula built this way doesn't need a single minute of sun exposure to get there.