When choosing a professional spray tan, 8%, 10%, 12% and 14% refer to the concentration of dihydroxyacetone (DHA), the cosmetic ingredient responsible for developing colour in the outer skin layer. The percentages are useful, but they don't tell the whole story.
What does DHA percentage measure?
A higher percentage generally has the potential to develop a deeper tan when applied according to the manufacturer's directions. The final appearance also depends on formulation, skin characteristics and application quality. Two products labelled 10% DHA may look different on the same client.
8%: a gentle-looking glow
An 8% solution may suit clients requesting a light, subtle appearance. It can also be a practical starting point when someone is unsure how bronzed they want to look.
10%: an everyday bronze
10% is an option for people seeking a more noticeable result without necessarily choosing the deepest shade. Ask to see a client's preferred look rather than assigning a formula based solely on appearance.
12%: a deeper finish
A 12% formula is typically selected when the desired outcome is a richer tan. Application technique still matters: over-application isn't a substitute for choosing the right solution.
14%: a rich option
14% offers a higher DHA concentration and can be appropriate where a deep finish is desired and the manufacturer's guidance supports it. It is not necessarily the correct choice for every client who requests a dark tan.
How Sunjunkie's options compare
Duo Spray Tanning Solution and Supreme Spray Tanning Solution both list 8%, 10%, 12% and 14% options. Product labels and consultation should guide selection, including any differences in colour guide and finish.
Does higher DHA mean a longer-lasting tan?
Not automatically. A darker initial result may remain visible differently, but all DHA tans fade as the outer skin layer sheds. Skin preparation and aftercare can make a bigger difference to an even-looking fade than chasing the highest percentage.
DHA strength is only part of the decision: our overview of choosing the right spray tan solution covers skin tone and finish, while selecting a professional salon formula looks at practical salon buying considerations.
Advice for technicians
Document the formula used, the client's desired shade and how the result developed. Make recommendations based on observed outcomes and follow the manufacturer’s instructions. You can compare the full professional solution range when planning shade options for your salon.
DHA percentages at a glance
Dihydroxyacetone (DHA) is the colour-developing ingredient used in many self-tanning and spray-tanning formulas. The percentage describes its concentration in the product; it does not represent the percentage of skin colour change, a fixed number of shades darker, or a guarantee of duration.
| DHA strength | Sunjunkie Duo description | Practical starting point |
|---|---|---|
| 8% | Light Golden — soft sun-kissed glow | For clients requesting a subtle finish |
| 10% | Medium Warm — natural bronze | For an everyday bronze |
| 12% | Deep Rich — deeper bronzed finish | For a more pronounced tan |
| 14% | Natural Olive — rich olive undertones | For clients deliberately seeking a rich finish |
These descriptions come from the current Sunjunkie Duo selection. Results are individual and should not be read as universal skin-tone rules.
Why the same percentage can look different on two people
Skin condition, natural colour, preparation, how evenly the solution is applied, total amount used, and rinse timing all influence the appearance. Different formulations with the same DHA concentration can also differ in guide colour and cosmetic finish. Two clients choosing 10% should therefore not expect identical results.
Does 14% last longer than 8%?
Not automatically. Stronger colour does not prevent the outer skin layer from shedding. Longevity depends heavily on even application and subsequent skincare. Excess product or uneven skin texture can make a deeper shade look patchier as it fades. If longevity is the priority, start with the preparation and aftercare routine instead of simply increasing DHA.
When a DHA comparison is not enough
Ask whether the client needs an express or traditional rinse schedule, has previously found tans too warm or too cool, and whether the salon’s equipment works well with the product. These are formula-selection questions, covered in how to choose a professional spray tan solution. Do not mix solutions or improvise development times unless the manufacturer permits it.