A tan accelerator is a lotion, oil, or cream designed to speed up your skin’s natural tanning process by boosting melanin production. Unlike self-tanners that dye your skin brown on their own, accelerators don’t change your color directly. They prime your skin to produce pigment faster when exposed to UV light, whether from the sun or a sunbed.
How Accelerators Work at the Skin Level
Your skin color comes from melanin, a pigment made by specialized cells called melanocytes in your outer skin layer. The production of melanin starts with an amino acid called tyrosine. Your body converts tyrosine into a series of intermediate compounds, eventually producing the brown-black pigment that darkens your skin when you’re exposed to UV light.
Tan accelerators supply extra tyrosine directly to the skin’s surface. The idea is that by flooding the area with more of this raw building block, your melanocytes can ramp up pigment production faster than they would on their own. Tyrosine is considered the gold standard ingredient in tanning accelerators for this reason. Many products also include plant-based extracts like walnut and carrot oil, which are marketed as additional pigment-production supporters, along with moisturizers like coconut oil and shea butter that keep skin hydrated so color develops more evenly.
How to Use One
Most tan accelerators are applied 20 to 30 minutes before UV exposure. You spread the lotion or oil evenly over the skin you plan to tan, giving the tyrosine time to absorb before you step into sunlight or a tanning bed. The result isn’t instant. There’s no immediate color change. Instead, you’ll notice a gradually deeper tan developing over your next few tanning sessions compared to tanning without the product.
Because accelerators work by enhancing your body’s own melanin response, they require UV exposure to produce any result at all. If you apply one and stay indoors, nothing happens. This is the key distinction from other tanning products.
Accelerators vs. Self-Tanners vs. Bronzers
These three product categories work in completely different ways, and mixing them up is common.
- Tan accelerators contain no coloring agents. They boost your natural pigment production and require UV exposure to work. The tan you get is real melanin in your skin.
- Self-tanners use an ingredient called DHA (a plant-derived sugar) that reacts chemically with amino acids on your skin’s surface to create brown pigments called melanoidins. No UV exposure is needed. The color sits in the outermost layer of dead skin cells and fades over three to seven days as your skin naturally exfoliates.
- Immediate bronzers are essentially body makeup. They provide an instant tint that washes off with water. Some people use them for a temporary glow while a real tan develops underneath.
Accelerators are most popular with people who are just starting a tanning routine or have fair skin that tans slowly. They’re meant to shorten the time it takes to build a base tan rather than replace UV exposure entirely.
The Sun Protection Problem
Some tan accelerators are sold with a small amount of SPF, typically around SPF 4. This creates a misleading impression of safety. An SPF of 4 does not offer adequate protection against sunburn, and the combination sends a contradictory message: the product encourages more UV exposure while providing almost no defense against its damage.
It’s worth understanding that sunscreen doesn’t block 100% of UV rays at any SPF level. Even properly applied SPF 30 allows some UV through, which is why people can still develop a slight tan while wearing sunscreen. There’s no biological need for an “accelerator” to get color. The marketing of low-SPF accelerators offers a false sense of security that can lead to longer, unprotected tanning sessions.
Products without any sunscreen must carry a required FDA warning label stating that they don’t protect against sunburn and that repeated unprotected UV exposure increases the risk of skin aging and skin cancer.
Do They Actually Work?
The evidence is mixed, and the answer depends on the format. Topical accelerator lotions containing tyrosine have some theoretical basis: tyrosine is genuinely the starting material for melanin, and supplying more of it to the skin’s surface could, in principle, support faster pigment production. However, there’s limited clinical research proving that applying tyrosine topically produces a meaningfully faster or deeper tan than UV exposure alone.
For oral tanning pills containing tyrosine, the picture is clearer. Oral tyrosine supplements have not been shown to work for tanning. Some tanning pills use a different approach entirely, relying on a pigment called canthaxanthin that deposits in the skin and fat to create an orange-brown color. This isn’t a real tan. It’s a carotenoid dye accumulating in your tissue, and it comes with its own set of health concerns.
Beta-carotene, another ingredient in some tanning pills, does deposit in the skin and may offer a small degree of photoprotection by raising the threshold of UV needed to cause a sunburn. But the color it produces tends to look more orange than the golden-brown of a natural tan.
Risks Worth Knowing
The primary risk of using a tan accelerator isn’t the product itself. It’s the behavior it encourages. Accelerators are designed to be paired with UV exposure, and UV radiation is the single biggest risk factor for skin cancer and premature skin aging. A product that makes tanning feel faster or more efficient can lead people to spend more cumulative time under UV light.
Topical accelerators made with standard cosmetic ingredients like tyrosine and plant oils are generally well tolerated on the skin, though individual allergic reactions or irritation are always possible with any topical product. The greater concern lies with oral tanning supplements, which sit in a loosely regulated space. Tanning pills are sold without prescriptions and readily available online, but the FDA has not approved canthaxanthin for use as a tanning agent. High doses of canthaxanthin have been linked to deposits forming in the retina of the eye.
If you’re using a DHA-based self-tanner (sometimes marketed alongside accelerators), keep in mind that DHA provides only about SPF 3, and that protection fades quickly. A self-tanner tan offers essentially no sun protection, even though the darker skin color might make you feel like you’re shielded.