Clients ask, “What’s actually in this spray tan solution?” more than ever. For professionals and students, that question matters. Ingredients control dry time, fade, comfort, color, and most importantly, safety.

Some education pieces online claim that ingredients like aloe vera or alcohol are always bad, or that “more ingredients = more dangerous.” That kind of blanket rule sounds simple, but it ignores cosmetic science and how modern formulas actually work.

This guide breaks down:

Which spray tan solution ingredients are generally safe and beneficial for the skin
Which ingredients you should approach with caution or avoid, especially if you want to stay aligned with current FDA guidance
How to apply this knowledge whether you use classic 8-hour solutions or rapid rinse formulas

First Things First – DHA and the FDA

The heart of every spray tan formula is its tanning active.

DHA (Dihydroxyacetone)

DHA is a simple sugar that reacts with amino acids in the outer layer of the skin, creating a temporary tan. It’s been the core of sunless tanning since the 1970s, and it’s the only color additive that the FDA has specifically authorized for use as a color additive in sunless tanning products for external application. U.S. Food and Drug Administration

Key points for students and pros:

DHA is allowed as a color additive for external use in sunless products; it should not be inhaled or applied to mucous membranes (eyes, nose, mouth, lips). Cosmetics Info
DHA-based tans color only the stratum corneum (top layer of skin) and fade as those skin cells shed.
Proper PPE (nose filters, eye protection, lip balm, ventilation) is part of working within those guidelines.

Sjolie-style solutions are built as DHA-only tanning systems, meaning DHA is the sole tanning active used to develop color, rather than combining DHA with additional self-tanning colorants.

Safe, Skin-Friendly Ingredients to Look For

Spray tan solution is more than just DHA and water. The base and supporting ingredients decide how the tan wears and how skin feels afterward.

Below are key “yes” ingredients, with examples from Sjolie’s professional solutions.

Aloe Vera – Hydration and Barrier Support

Some training pieces online suggest avoiding aloe-based solutions because they’re “thick,” “sticky,” or “pore-clogging.” In reality, aloe vera is one of the most skin-friendly bases you can use when it’s part of a well-balanced formula.

What aloe vera does:

Provides hydration and helps support the skin’s moisture barrier. – Fincacanarias
Offers soothing and anti-inflammatory benefits, useful after sun exposure or irritation. School of Natural Skincare
Can help tans fade more evenly by keeping the outer layer of skin from becoming overly dry and flaky.

Sjolie’s ingredient catalog and solution labels highlight aloe barbadensis as a base component, specifically to improve hydration and wear time, while avoiding common problem ingredients like urea, mineral oil, and erythrulose.

Denatured Alcohol – Dry Time in Balance

“Never use solutions with alcohol” is another popular myth. The truth is more nuanced.

What denatured alcohol does in sunless formulas:

Helps solutions dry quickly on the skin, which is critical for both mobile artists and studio pros. – Healthline
Can make the product feel lighter and less tacky after application.

Potential downsides:

Overuse or high concentrations can dry out skin and stress the moisture barrier, especially in leave-on products without hydrating partners. – relativskin

In modern solutions (including many rapid formulas), denatured alcohol is paired with hydrating ingredients like aloe and glycerin. This balances quick dry time with comfort. Sjolie’s white label technical sheet even notes formulas “with alcohol for quick dry benefits” while still omitting mineral oil and urea.

So instead of “no alcohol ever,” a better rule is:

“Alcohol is fine when it’s balanced with humectants and emollients, and the client’s skin type is respected.”

Glycerin – Humectant Workhorse

Glycerin is a classic humectant used across skincare.

Why it’s helpful in spray tan solutions:

Draws and holds water in the upper layers of the skin, keeping it from feeling tight as DHA develops. Cosmetics Info+2Naturopathica+2
Supports smoother, more even fade-out, especially on drier clients.
Plays nicely with aloe to keep the solution hydrating without being greasy.

You’ll see glycerin in Sjolie ingredient listings alongside aloe, acting as a core support ingredient in the base. Sjolie White Label+2Sjolie+2

Antioxidant Vitamins A, C, and E

Many professional solutions, including Sjolie’s, stack vitamins A (retinyl palmitate), C (ascorbic acid), and E (tocopheryl acetate) into the formula.

Benefits:

Provide antioxidant support, helping protect the skin from free radicals and environmental stress.
Add a subtle “skincare boost” to the treatment, which clients love.
Support overall skin health, which in turn supports better tan wear and fade.

These vitamins aren’t used at retinoid-treatment levels; they’re included to condition and support the skin, not to act as active resurfacing treatments.

Walnut Extract and Other Gentle Botanicals

Walnut extract appears in many Sjolie formulas.

In spray tan solutions, gentle botanicals like walnut, green tea, or plant oils can:

Provide natural-looking cosmetic bronzing or warm undertones.
Add antioxidant or soothing benefits.
Help differentiate the shade and undertone of a formula (e.g., golden vs. olive).

As with any botanical, the key is quality and concentration, but these are generally considered safe and supportive when used in cosmetic ranges.

Ingredients to Approach With Caution or Avoid

Now, let’s talk about ingredients that raise more questions for pros who want to stay tightly aligned with current regulatory guidance and keep formulas straightforward.

Erythrulose as a Tanning Active

Erythrulose is a sugar used in some self-tanning products alongside DHA. It can create color through a similar reaction in the outer skin layers and is marketed as improving longevity and fade.

Regulatory status:

Multiple industry and educational sources acknowledge that erythrulose is not currently approved by the FDA as a self-tanning color additive, unlike DHA.

Where you’ll see it:

Some brands promote “triple action” formulas featuring DHA + bronzers + erythrulose as three separate tan actives. MineTan’s pro spray mists, for example, list erythrulose as a key skin-loving tanning ingredient alongside DHA and bronzers.
Norvell and partner educational content discuss DHA combined with erythrulose in additives and solutions to “develop a longer-lasting tan.”

Why many cautious pros avoid it:

If you want to stay strictly within the single tanning color additive explicitly authorized for external use in sunless tanning (DHA), choosing DHA-only formulas is the conservative path. U.S. Food and Drug Administration
Reports are mixed: some sources suggest erythrulose may fade more blotchy or uneven for certain users, and claims about dramatically improving longevity are often marketing-based rather than clearly supported by independent data.

This is why many brands, like Sjolie, specifically highlight that their solutions do not contain erythrulose, relying instead on DHA plus hydrating and antioxidant ingredients.

Heavy Mineral Oils and Urea

Some older or lower-cost formulas use heavy mineral oils or urea in the base.

Potential issues:

Mineral oil can feel greasy and may interfere with even application or absorption on certain skin types.
High urea levels (great in some foot creams) can over-soften the outer skin layer, potentially affecting how the tan develops and fades.

Sjolie’s technical sheets call out that their professional solutions do not contain urea or mineral oil, which keeps the base cleaner and reduces the variables that can cause streaking or uneven fade.

Overloaded Fragrance and Heavy Dyes

While not unique to any one brand, keep an eye on:

Strong artificial fragrance – can be irritating for sensitive clients or those prone to migraines or contact dermatitis.
Very heavy dye loads in bronzers – may increase transfer and create a big “color drop” in the shower if the bronzer tone doesn’t closely match the final DHA tan. Cosmetics Info

Look for solutions with:

Clear, honest labeling of fragrance
Guide colors that support the final result rather than dramatically distort it

Classic vs. Rapid Solutions – Does “Safe” Change?

Whether you’re using:

A standard 8–12 hour solution, or
A rapid rinse solution (1–4 hour wear time)

…the core safety questions stay the same:

Is DHA the only tanning color additive? U.S. Food and Drug Administration
Are support ingredients (like aloe, glycerin, vitamins) helping the skin stay comfortable and hydrated?
Are you avoiding unapproved tanning colorants like erythrulose if you want strict regulatory alignment?
Is alcohol, if present, balanced with humectants so the skin doesn’t feel stripped? Lab Muffin Beauty Science

Rapid solutions often lean more on alcohol + light bases for fast dry time, while classic solutions may feel richer and more hydrating during the full wear period. Both can be safe and effective when the ingredient deck is built thoughtfully.

Quick Ingredient Checklist for NSTPA Students

Use this when you’re evaluating any spray tan solution:

Green flags (good signs):

DHA clearly listed as the only tanning color additive
Aloe vera + glycerin + supportive emollients
Antioxidant vitamins like A, C, and E
Full ingredient list available (on label or website)
No urea, no mineral oil, no erythrulose (if you’re aiming for DHA-only)

Yellow/red flags (caution):

Erythrulose listed as a tanning active, especially marketed as a “premium” must-have
Heavy fragrance with no indication of sensitive-skin testing
Very oily bases heavy in mineral oil
No full ingredient list provided anywhere

Teaching students to read labels this way gives them confidence, clarity, and a basis for talking about safety with clients instead of relying on vague marketing claims.

FAQs – Spray Tan Solution Ingredients and Safety

Q: Is aloe vera safe in spray tan solutions?
A: Yes. Aloe vera is widely used in skincare for its hydrating, soothing, and barrier-supporting properties. In spray tan formulas, aloe helps keep the outer skin layer comfortable and moisturized so the tan can develop and fade more evenly, especially when combined with humectants like glycerin. – curoloe

Q: Is alcohol always bad in spray tan solution?
A: Not always. Denatured alcohol can help solutions dry faster and feel lighter. It becomes a problem when used without balancing hydration—especially on already-dry or compromised skin. In well-formulated solutions, alcohol is paired with ingredients like aloe and glycerin to keep the skin comfortable while still delivering quick dry times.

Q: Is erythrulose FDA approved as a tanning ingredient?
A: No. DHA is currently the only color additive authorized by the FDA for use as a color additive in sunless tanning products for external application. Erythrulose is not approved as a self-tanning color additive, even though some brands pair it with DHA in their solutions and additives.

Q: How do I choose a “safe” spray tan solution for my business?
A: Look for DHA-only formulas with clear ingredient lists, aloe and glycerin for hydration, antioxidant support (vitamins A, C, E), and transparency about what’s not included—such as urea, mineral oil, and erythrulose. Then layer correct PPE and spray technique on top of that foundation.

Safe vs. Unsafe Spray Tan Solution Ingredients: What Pros Should Really Know