The longevity of a sunless tan depends on the type of self-tanning application, the skin's natural exfoliation process, and the skincare regimen followed before and after the application. On average, self-tanners last 5-6 days. A professional application, or a spray tan received at a salon or spa, will last longer than an at-home application or in an automated spray booth, usually, 7-10+ days if you follow proper pre & post-care. The "life span" of a sunless tan also depends on your skin's natural exfoliation. The faster your skin turns over, the faster the sunless tan will fade. The tan created by the DHA affects only the top layer of the skin and will begin to fade after 4 to 5 days as the skin naturally begins to exfoliate. Following a good skin care regimen before and after sunless tanning will help a sunless tan last longer. Exfoliating prior to a sunless tanning application and keeping skin moisturized afterward are essential. Sunless Tan-extending products with a light self-tanning bronzer or tan-extending lotion, help hydrate skin and maintain an even, natural-looking color longer.