What DHA Percentage Should a Spray Tan Artist Use?

One of the first questions a spray tan artist asks is:

“What DHA percentage should I use on this client?”

It is an important question, but the number printed on the bottle is only one part of the decision.

Dihydroxyacetone, or DHA, is the active tanning ingredient that reacts with amino groups within the stratum corneum to create temporary color compounds. To understand the reaction itself, read How Sunless Tanning Actually Works on Skin

Increasing the DHA concentration can increase potential color depth, but a higher percentage does not guarantee a darker, smoother or more natural-looking result.

The finished tan is influenced by the interaction among:

• DHA concentration
• Complete formulation
• Amount of spray tan solution applied
• Number and weight of coats
• Development or rinse time
• Condition of the stratum corneum
• Client’s individual skin response
• Preparation and aftercare

Professional DHA selection should therefore begin with the client’s skin and desired result, not simply a request to “go as dark as possible.”

What Does DHA Percentage Mean?

DHA percentage describes the concentration of DHA within the tanning solution.

For example, a 10% DHA solution contains a lower concentration than a 12% or 14% solution.

Under comparable conditions, increasing the DHA concentration generally increases the potential depth of developed color. However, the percentage does not predict the exact result on every client.

Two clients sprayed with the same formula and percentage may develop differently because their stratum corneum differs in:

• Hydration
• Surface texture
• Dryness
• Thickness
• Amino acid composition
• Exfoliation pattern
• Product residue
• Natural shedding behavior

The number provides useful formulation information. It is not a guaranteed shade outcome.

Higher DHA Does Not Automatically Mean a Better Tan

Artists are sometimes encouraged to select the highest available DHA percentage whenever a client wants a dark result.

This can create problems.

A higher concentration may make existing dryness, texture, buildup and application inconsistencies more visible. Hands, feet, knees, elbows and ankles may become disproportionately dark if too much solution reaches those areas.

Higher DHA combined with heavy application or excessive development may produce a result that appears:

• Overly warm
• Uneven
• Dry
• Textured
• Unnaturally deep in certain areas
• Less graceful as it fades

The goal is not to apply the highest percentage the client will accept. It is to create the deepest appropriate result the client’s skin can support evenly.

 Begin by Reading the Skin

Before selecting a DHA percentage, observe the visible condition of the skin.

Look for:

• Flaking
• Ashiness
• Rough texture
• Tight or papery appearance
• Product buildup
• Uneven exfoliation
• Excessively dry hands, feet, knees or elbows
• Recently shaved, waxed or irritated areas
• An existing sunless tan

These observations do not diagnose a skin condition. They help the artist decide whether the surface appears ready for an even application.

A client with dry, mature or over-exfoliated skin may benefit from:

• A lower DHA percentage
• A lighter application
• Less product on dry areas prone to developing too dark
• A shorter appropriate rapid-development period
• Rescheduling when the skin is visibly irritated or inadequately prepared

A client with smooth, well-conditioned skin may tolerate a deeper percentage more evenly, but application control remains essential.

For more help identifying factors behind uneven development, read Why Does My Client’s Spray Tan Look Patchy?.

Desired Depth Still Matters

Skin condition is not the only consideration. The consultation should establish what the client means by “dark.”

Ask whether the client wants:

• A subtle glow
• A noticeable everyday bronze
• A deeper special-event result
• The deepest appropriate result
• A competition or stage tan

A client’s reference for “dark” may differ greatly from the artist’s.

Discuss previous results when possible:

• What formula or percentage was used?
• How long did the client develop?
• Was the result deep enough?
• Did dry areas become too dark?
• How did the tan fade?
• Was the client satisfied after full development, not merely before rinsing?

Previous documented results provide more useful guidance than guessing from visible skin tone alone.

DHA Percentage and Application Amount Work Together

A percentage does not tell you how much DHA actually reaches the skin.

The artist also controls:

• Fluid output
• Spray gun speed
• Distance from the body
• Number of passes
• Weight of each coat
• Total solution used
• Additional product applied to specific areas

A controlled application of a higher percentage is not equivalent to oversaturating the skin with the same formula.

Likewise, repeatedly coating a client with a lower percentage does not necessarily produce a more refined result. It may simply increase the amount of solution deposited and the potential for dripping, transfer or uneven coverage.

At AYU, the typical professional guideline is approximately 1.5–2 fluid ounces for a full-body service, applied as two controlled, lightweight coats. Technique and client size may require adjustment.

More solution is not automatically more color—and it is rarely more control.

Classic DHA Selection

Classic solutions are designed for a traditional development period specified by the manufacturer.

Artists commonly select classic depth through the available DHA percentage. A simplified working framework may look like this:

Lower DHA: approximately 6–8%

May be considered for:

• Fair clients seeking subtle depth
• First-time clients
• Dry or mature skin
• Clients with previous uneven development
• Conservative special-event results
• Clients who prefer a softer tan

Medium DHA: approximately 9–10%

May be considered for:

• Clients seeking a noticeable everyday bronze
• Balanced, well-prepared skin
• Clients with successful previous sunless tanning experience
• Artists needing a versatile studio range

Deeper DHA: approximately 12%

May be considered for:

• Clients requesting a deeper result
• Skin that appears smooth and well-conditioned
• Clients with a history of developing evenly
• Special events requiring more visible depth

Highest professional range: approximately 14%

May be considered for:

• Clients seeking their deepest appropriate result
• Well-conditioned skin
• Experienced sunless-tanning clients
• Controlled applications where the artist understands the formula

These are professional considerations—not rigid skin-tone rules.

A fair client is not automatically limited to one number, and a client with deeper skin is not automatically suited to the highest percentage. The artist must evaluate skin condition, desired result, previous experience and application plan together.

Rapid Formulas Require a Different Decision

Rapid solution should not be treated as simply a high-percentage classic solution.

A properly developed rapid formula uses a complete formulation system intended to support earlier color development and a shorter period before the first rinse.

With rapid services, the artist typically manages the result through the manufacturer’s assigned rinse window.

Important considerations include:

• The specific rapid formulation
• Manufacturer instructions
• Client’s skin condition
• Desired depth
• Amount applied
• Client’s ability to rinse at the assigned time

A rinse schedule from one rapid product should not automatically be applied to another. Formulas differ.

The client should also understand that the cosmetic guide color may rinse away before the DHA-developed tan is fully visible. Color can continue developing after the first rinse.

Does Rinsing Later Always Make a Rapid Tan Darker?

Within a formula’s intended rapid-development window, additional time before rinsing may increase DHA exposure and potential depth.

However, leaving the formula on indefinitely does not guarantee continued improvement.

Excessive wear may increase:

• Skin dryness
• Cosmetic guide transfer
• Discomfort
• Unevenness in dry areas
• The risk of a result becoming deeper than intended

Follow the manufacturer’s specified rinse range. Do not assume that doubling the recommended time will produce twice the color.

Can DHA Percentages Be Mixed?

Artists sometimes mix two percentages from the same compatible formula collection to create an intermediate strength.

Whether this is appropriate depends on the manufacturer’s instructions and the compatibility of the products.

Do not assume that solutions from different collections or manufacturers can be combined simply because both contain DHA. The products may differ in:

• Preservation systems
• pH
• Viscosity
• Bronzer systems
• Emulsifiers
• Solvents
• Botanical ingredients
• Stability requirements

may differ.

If an intermediate percentage is needed, use manufacturer-approved mixing guidance or select an available formula designed for that purpose.

How AYU Organizes DHA Options

AYU offers multiple DHA percentages because artists need control beyond one universal solution.

AYU Plus Brown and AYU Plus Clear

Available in:

• 6%
• 8%
• 10%
• 12%
• 14% DHA

These collections allow artists to select classic DHA depth with or without a traditional cosmetic guide bronzer.

Vino Bronzing Mist

Available in:

• 6%
• 8%
• 10%
• 12%
• 14% DHA

The range allows artists to maintain a consistent formulation collection while adjusting DHA strength according to the client.

Tanvee Advanced

• Tanvee Advanced Medium: 10% DHA
• Tanvee Advanced Dark: 12% DHA
• Tanvee Advanced Rapid: customizable rapid development

Cocoanilla Advanced

• Cocoanilla Latte: 9.5% DHA
• Cocoanilla Mocha: 12% DHA
• Cocoanilla Espresso: 14% DHA with classic or rapid use
• Cocoanilla Double Shot Rapid: dedicated rapid formula

Celerity and Vino Rapid

These provide additional rapid-development choices for studios offering shorter rinse schedules.

Each collection has its own complete formulation. The same DHA percentage across two collections does not make the products identical.

For help comparing complete formulas, read What Is the Best Spray Tan Solution?.

A Practical DHA Selection Process

Before reaching for a percentage, ask:

1. What result does the client want?
2. What is the visible condition of the skin?
3. Has the client tanned successfully before?
4. What percentage or formula was previously used?
5. How did the previous tan develop and fade?
6. Is the client properly prepared?
7. Does the client need classic or rapid development?
8. How much solution will be applied?
9. Are certain areas likely to require lighter application?
10. Can the client follow the assigned rinse and aftercare instructions?

Then select the formula, percentage and application plan together.

Document the Result

Record:

• Formula
• DHA percentage, when applicable
• Classic or rapid
• Amount used
• Number and weight of coats
• Rinse time
• Visible skin condition
• Client’s desired depth
• Fully developed result
• Fade quality
• Adjustments for the next appointment

Documentation turns DHA selection into an informed process rather than repeated guesswork.

Frequently Asked Questions

Does a higher DHA percentage always produce a darker tan?

A higher concentration can increase potential depth, but the finished result also depends on application amount, development time, skin condition, formulation and individual skin response.

Is 14% DHA suitable for every client who wants a dark tan?

No. The deepest appropriate percentage depends on the client’s skin condition, previous results and the artist’s application plan.

Should DHA percentage be chosen by undertone?

No. Temporary bronzer hue and undertone categories do not determine the DHA reaction. The client’s natural coloring can influence how the finished tan is perceived, but professional DHA selection should focus on skin condition, desired depth, formulation and development.

Can an artist make a lower DHA solution darker by applying more?

Applying more product increases the amount deposited but may also increase oversaturation, transfer and unevenness. More solution is not a substitute for purposeful formula selection.

Does rapid-rinse time equal a specific DHA percentage?

Not universally. Rapid formulas differ, and rinse guidance should come from the manufacturer of the specific product.

The Bottom Line

DHA percentage helps establish potential color depth, but it does not determine the final spray tan by itself.

The artist must consider:

• Complete formulation
• Skin condition
• Desired depth
• Application amount
• Development or rinse time
• Previous client results

The right percentage is not necessarily the highest one available. It is the concentration that allows the artist to create an even, appropriate and reproducible result on the skin in front of them.

About the Author

Vibha Makwana is the founder and lead cosmetic chemist behind AYU Sunless. She holds bachelor’s and master’s degrees in chemistry and has more than 30 years of cosmetic formulation and manufacturing experience.

Since founding AYU Sunless in 2003, Vibha has focused on developing skincare-infused professional tanning solutions that combine cosmetic chemistry, consistent performance and a skin-first approach.