Spray Tan Development Time Explained: Why Longer Doesn't Always Mean Darker
, by Lynsey Bennett, 3 min reading time
“Should I leave it on longer so I go darker?”
It’s a question almost every spray tan artist will hear.
But professional tanning is more nuanced than simply thinking longer development = darker tan.
Development time, DHA level, skin condition, solution choice and application technique can all influence the finished result.
What Happens During Development?
Most professional spray tan solutions use DHA (dihydroxyacetone), which reacts with amino acids in the outermost layer of the skin to create temporary colour.
That reaction takes time, which is why the colour a client sees immediately after their appointment isn’t necessarily their finished result.
The visible colour straight after spraying also includes the guide colour, which helps artists see where product has been applied.
Once the client rinses, much of that guide colour washes away - but the tan can continue developing afterwards.
Longer Doesn't Automatically Mean Darker
Leaving a tan on significantly longer isn’t a reliable way to create a deeper result.
The finished colour depends on the formulation, DHA strength, application and how the client’s skin responds.
If a client wants a deeper tan, the answer shouldn’t simply be:
“Leave it on longer.”
Instead, choose the right solution and shade based on their natural colouring, desired result and previous tanning experience.
Rapid Tan Doesn't Mean Instant Tan
A rapid tan allows the client to rinse the guide colour sooner, but that doesn’t mean the final tan is fully developed by the time they shower.
Colour can continue developing after rinsing.
Make sure rapid-tan clients know this before they leave, particularly if it’s their first time using one. Otherwise, they may rinse, look lighter than expected and assume their tan hasn't worked.
Skin Condition Still Matters
Two clients can receive the same solution and still achieve slightly different results.
Dry areas such as the hands, elbows, knees and ankles can take colour differently, which is why good skin preparation remains so important. Lusso Tan Professional education also highlights that dry areas can absorb more DHA.
Consistent hydration and proper exfoliation before the appointment give you a better base to work with.
Application Matters Too
More solution doesn't automatically mean more colour.
Controlled, consistent coverage will usually give a better result than over saturating the skin.
Pay attention to your gun settings, distance, speed and overlap. Development time can’t compensate for poor technique.
Always Give Clear Rinse Instructions
Before every client leaves, make sure they understand:
- When to take their first shower
- What to expect when the guide colour rinses away
- That the tan may continue developing afterwards
- What to avoid during development
- How to maintain their tan afterwards
Educating clients is part of delivering a professional service - and better education can lead to better results and repeat bookings.
Understand the “Why”
A great spray tan artist doesn't just memorise development times.
They understand why those timings matter.
The more you understand your solutions, DHA, skin preparation and development, the more confidently you can choose the right tan and explain the process to your clients.
Because professional spray tanning isn't simply about applying solution.
It's about knowing how to create the right result for every client.