How Spray Tans Work: The Science Behind DHA

Published On: January 9, 2025

Ever wondered how spray tans work and what gives your skin that flawless, sun-kissed glow? The magic behind spray tans lies in a key ingredient called DHA, or dihydroxyacetone. Let’s break down the science and show you how this revolutionary tanning solution transforms your look without exposing your skin to harmful UV rays.

What Is DHA?

Dihydroxyacetone (DHA) is a simple carbohydrate derived from sources like sugar beets, sugar cane, or glycerin. It’s a colorless chemical that reacts with the amino acids in the outermost layer of your skin (the stratum corneum). This reaction creates a temporary browning effect, giving your skin the appearance of a natural tan. DHA has been FDA-approved for external cosmetic use since the 1970s and is considered a safe alternative to sunbathing or tanning beds, which can cause skin damage, premature aging, and increase the risk of skin cancer.

How Does a Spray Tan Work?

The spray tan process involves applying a fine mist of a tanning solution containing DHA to your skin. Here’s how it works step-by step:

step: 1. Application: A technician sprays the tanning solution evenly onto your skin, or you use a booth equipped with automated sprayers.

step: 2. Chemical Reaction: Once applied, DHA begins reacting with the amino acids and proteins in your skin’s outer layer. This reaction, known as the Maillard reaction (similar to how bread crust browns when baked), produces pigments called melanoidins, which darken the skin.

step: 3. Development Time: The tan typically starts to appear within 2-4 hours of application and continues to deepen over the next 24 hours.

step: 4. Longevity: Spray tans last about 5-10 days, depending on your skin type, aftercare routine, and how often you exfoliate.

Why Choose a Spray Tan?

Safe for Your Skin: Unlike UV rays, spray tans don’t damage your skin or increase your risk of skin cancer.

Customizable Results: You can choose the level of darkness and tone to match your preferences or occasion.

Quick and Convenient: The process is fast, and the results are almost instant.

Year-Round Glow: Whether it’s winter or summer, spray tans keep your skin looking radiant.

Does DHA Work for Everyone?

While DHA works for most skin types, the results may vary depending on your skin’s natural chemistry. For example:

– Fair skin tones might develop a lighter tan.

– People with dry skin might experience uneven fading if they don’t moisturize regularly. To achieve the best results, exfoliate and moisturize your skin before your spray tan appointment. Proper preparation ensures the DHA reacts evenly and provides a smooth, streak-free finish. Read about preparing for a spray tan HERE.

Other Ingredients in Spray Tan Solutions: In addition to DHA, spray tan solutions often contain:

– Aloe Vera: Hydrates and soothes the skin.

– Cosmetic Bronzers: Provide an immediate “glow” while the DHA develops.

– Vitamins and Antioxidants: Nourish and protect the skin.

These ingredients enhance the overall experience and leave your skin feeling soft, smooth, and radiant.

Caring for Your Spray Tan To extend the life of your spray tan:  Avoid showering or sweating for 6-8 hours after application.  Use sulfate-free and alcohol-free skincare products.  Pat your skin dry after showering instead of rubbing it with a towel. Read all about caring for your spray tan in our previous blog post HERE.

Spray tans offer a beautiful, sun-kissed glow without the risks associated with traditional tanning methods. By understanding how DHA works and how to care for your tan, you can enjoy radiant, healthy-looking skin year-round. Ready to experience the magic of spray tans? Book your appointment at Shades Atelier today and let us help you achieve your perfect glow! Book Now