The Science Behind Tan: How Sunless Tanning Products Work

The Science Behind Tan: How Sunless Tanning Products Work

The Science Behind Tan: How Sunless Tanning Products Work

Isle of Paradise carries a variety of self tanning options, including Self-Tanning Water, Glow Clear Mousse, Express Mousse, and Tanning Drops. How do you decide which one is right for you? We’ve got you covered, head-to-toe—if you love a bronzed look. What are the different types of self tanning products?

What are the different types of self-tanning products?

Finding the right routine means knowing which products will be best for your skin, the tan you want, and your application methods. We will run through some of the tanning types you can choose and useful tips for application, timing, and how often to tan based on your skin. This Guide also covers tanning frequency and how much time to leave between sessions, so your skin stays comfortable and your results look even.

Self-tan mousse

Description: Lightweight and easy to spread on, mousses are popular for their quick-drying time.

  • Best for: Those new to self tanning or familiar with traditional self tanning. Application tips: Use a mitt for even distribution, then give your skin enough time to dry before you get dressed.

Tanning drops

Description: Tanning concentrate that can be mixed with your favorite body and face moisturizers, and it can help you maintain a natural look over time.

  • Best for: Customizable tanning that can also be used on your face. Application tips: Start with fewer drops at first, then adjust over time.

  • Mix with your favorite face or body moisturizer

Water-based tans

Description: A hydrating option that’s light on the skin and feels like a spray tan at home.

  • Best for: Sensitive skin or looking for fast application. Application tips: Spritz onto the skin and buff in with a mitt, ensuring your skin is fully saturated, then wait a little time before you wear tight clothing.

  • If you want the look without the sun or UV rays, this can be an effective option for people who prefer self tanning at home.

Different self-tan application techniques

Knowing how to apply your self tanner is essential too. For an even, flawless tan, you’ll want to keep these tips in mind.

Self-tan prep, application + aftercare (your easy routine)

A consistent self tanning routine comes down to three simple steps: prep, application, and aftercare. Prep: exfoliate 24 hours before you apply self tanner to help avoid dark patches—pay extra attention to dry areas like elbows, knees, ankles, and feet so your skin stays smooth. If you shave, do it the day before, hop in the shower, then pat skin dry with a towel and let everything calm down—this helps reduce irritation and keeps the skin more even. Application: apply your chosen mousse, water, or drops with a mitt using long, sweeping strokes so color can develop evenly across the body, and give your skin enough time to absorb. Use less product on hands, blend over knuckles, and keep product off the palms; you can always add a light second pass later if you need it. Aftercare: maintain results with daily moisturizer and gentle wash habits, then exfoliate lightly as your glow fades to keep skin smooth and free of streaks. In general, most people maintain a glow with a touch-up once a week, but your skin and lifestyle will decide what work best for your routine.

Indoor tanning basics: how to prep for your first session

If you’re trying indoor tanning for the first time, treat it like any new skincare routine and pay attention to how your skin reacts over time. At the tanning salon, confirm the tanning bed type and ask what’s recommended for your skin type, including how many sessions per week and what tanning time to start with. Keep your first session short (just a few minutes) on the tanning bed. That way you can check your skin response before you increase exposure or add more sessions. Skip perfume, deodorant, heavy oils, and makeup right before you use tanning bed equipment (the bed should be clean and dry), since these things can interfere with results and may increase irritation. Wear protective eyewear, use protective lip balm, and consider sunscreen (SPF) on tattoos or very sensitive areas if it’s recommended to help protect skin. If you rarely tan or you’re coming back after a long break, start slow—the goal is to develop color without burns, peeling, or lingering sensitivity, and without pushing tanning time longer than needed. Indoor tanning uses UV rays similar to the sun, and more exposure over time is associated with higher health risk.

How many layers of self-tan should I do?

  • Single layer: For a natural, sun-kissed glow. Tips: Wait for the first layer to dry completely before applying the second, and give your skin enough time between layers.

How much self-tan should I use?

  • Arms and Legs: For Water and Mousse, 3-5 sprays or pumps. For Drops, 1 full dropperTorso: For Water and Mousse, 2-3 sprays or pumps.

  • For Drops, half a dropper. Tips: Start with less product; you can always add more if needed, which is often more effective than applying too much at once.

How to apply self tanner on hands, face + dry areas

When you apply self tanner, technique matters just as much as the products you choose, and it helps keep skin looking natural. For the face, mix drops into moisturizer for a more natural look and easier control, then blend into the hairline and jaw with a light layer so the skin tone stays even. For hands, use whatever is left on the mitt after your arms—sweep over the back of hands and around wrists, keep palms clean, and wash fingertips if needed (this helps avoid dark patches on the skin). On knees, elbows, ankles, and other dry areas, moisturize first, then apply a smaller amount so those spots don’t develop darker; this step helps keep the skin finish smooth. Want a deeper bronzed finish? Build it with two light layers instead of one heavy application, and give enough time between layers for the base tan to dry and set (a longer wait can look more even).

Aftercare and maintenance

  • Moisturize Daily: Keeps skin hydrated and prolongs the tan. Exfoliate Regularly: Helps avoid patchiness as the tan fades.

  • Reapplication: Each of our products is different, but usually every 5-7 days (about once a week), depending on how your skin sheds and how you maintain your routine.


  • If you love a deeper look, you can apply self tanner more often, but keep a consistent week-by-week routine so the skin on your body doesn’t get dry or patchy.

View our self-tanning range to find the right products for you.

Tanning frequency by skin type (and why gradual matters)

Tanning frequency looks different for everyone because your skin type, melanin, and response to UV exposure all play a role in how quickly color will develop and how long it lasts. A fair, light skin type is more likely to burn, so frequent tanning sessions can significantly increase risk and damage over time—self tanner or a spray tan is a safer way to achieve a bronzed look without the sun. Medium and deeper skin type tones may see results more gradually, but indoor tanning and tanning bed use are still associated with skin cancer, reduced skin health, and early age-related skin changes over the year. If you choose indoor tanning, start with fewer sessions per week and shorter minutes on the tanning bed, then increase tanning time gradually only if you’re not seeing redness or burns—and avoid going longer just to chase faster color. The best schedule is one that gives skin time to recover between sessions, instead of stacking tanning sessions back-to-back; over a year, this can make a meaningful difference for skin comfort and health. A good rule is to keep at least a full day between tanning bed sessions and avoid doing them back-to-back in the same week, especially if you’re new or fair.

What to avoid with tanning beds (plus signs of overexposure)

Whether you’re using self tanning products or doing indoor tanning, avoid pushing things too fast, and don’t treat more time as automatically better. Before tanning sessions, don’t exfoliate aggressively the same day and don’t apply sensitizing skincare—irritated skin is more likely to feel uncomfortable and develop uneven results, and frequent changes to your routine can make this worse. During indoor tanning sessions, don’t go beyond the minutes that are recommended, and don’t increase session length just because you don’t look dark right away—tanning can keep developing for hours after the UV rays hit the skin. Watch for signs of overexposure: redness that lasts into the next day, heat, tenderness, tightness, or clear burns; this can signal too much UV exposure in too little time. If you notice any of these, pause sessions for at least a week, focus on protective care, and reassess your schedule—repeated burns increase long-term health risk, including skin cancer, and the damage can be long-lasting over the year and with age. If you still choose to use tanning bed equipment, ask the tanning salon staff about the bed settings, use approved indoor tanning lotions, and keep total time and frequency low for a safer approach.