Six ingredients, in full.

What it does: The base — every ingredient is dissolved in or suspended in water. Without it, you'd have nothing to apply.

Why we use it (and not alcohol): Most spray tans use isopropyl or denatured alcohol as their base because alcohol evaporates fast — meaning quick dry-time. The cost: alcohol strips your skin's natural moisture, accelerates fade, and irritates sensitive skin. Water takes a little longer to dry but leaves your skin's barrier intact.

What you'd find in most other formulas: SD Alcohol 40, Isopropyl Alcohol, Denatured Alcohol (Alcohol Denat.). All three are common in drugstore self-tanners.

What it does: Hydrates and soothes the skin while the DHA reacts. Reduces the tightness, dryness, and faint itch that lower-quality self-tans cause.

Why we use it: A self-tan reaction is technically a controlled oxidation on the skin's surface. It dehydrates the top layer slightly. Aloe is the gentlest, most-studied counter to that — non-comedogenic, safe on sensitive skin, safe during pregnancy.

What you'd find in most other formulas: Silicones (Dimethicone, Cyclopentasiloxane) for slip, or glycerin for hydration. We use neither — aloe handles both jobs without coating the skin.

What it does: The actual tanning active. DHA is a simple 3-carbon sugar that reacts with amino acids in the top layer of dead skin cells (the stratum corneum), producing melanoidins — the brown pigment that creates the tan color.

Why we use it: DHA is the only FDA-approved self-tan active for topical use, and the most-studied of any sunless tan ingredient. Used at the right concentration in a clean base, it gives a natural, gradual color that develops over 4–6 hours and lasts 7–10 days.

What it's not: A sunscreen. A self-tan does not protect you from UV. Always wear SPF.

Safety: Topical DHA has decades of safe-use data. The one caution: avoid inhaling mist during spray application (we use a mask in the studio). Not advised for the mucous membranes — eyes, mouth, internal use.

What it does: A natural preservative that prevents bacterial and yeast growth in water-based formulas.

Why we use it: A six-ingredient formula needs a preservative — without one, water-based products grow microbes within days. Sodium benzoate is the gentlest, most-studied option: it's naturally occurring in fruits like cranberries, prunes, and apples; it's FDA-approved as a food and cosmetic preservative; it's well-tolerated by sensitive skin.

What you'd find in most other formulas: Phenoxyethanol, parabens (methyl-, propyl-, butylparaben), or formaldehyde-releasing preservatives (DMDM Hydantoin, Imidazolidinyl Urea). All of these have larger safety question marks than sodium benzoate.

What it does: A second preservative that complements sodium benzoate by targeting molds and fungi.

Why we use it: Sodium benzoate handles bacteria; potassium sorbate handles mold. Together they cover the full range without needing parabens or phenoxyethanol. Like sodium benzoate, it's naturally derived (sorbic acid is found in rowanberries), FDA-approved as a food preservative, and gentle on skin.

Used in: Cheese, wine, baked goods, baby food. Same compound, food-grade purity in our formula.

What it does: Natural color guide — the brown tint you see when applying the Mousse. It lets you see exactly where you've applied so you don't miss a spot. Rinses off cleanly in your first shower, leaving the developed DHA color underneath.

Why we use it (not FD&C dyes): Most self-tans use FD&C dyes (Yellow 5, Red 40, Blue 1) as their color guide. These are petroleum-derived, banned in cosmetics in parts of Europe, and linked to skin sensitivity in some users. Plus they stain fabrics permanently — that orange palm-print on your bath mat.

Our caramel: Food-grade, water-soluble, washes out of fabrics, gluten-free. Same compound that gives Coca-Cola its color.

Note: The Tanning Water has no color guide — no caramel — for a totally invisible application. Five ingredients instead of six.

• Alcohols (SD Alcohol 40, Isopropyl, Denatured) — strips skin's moisture barrier
• FD&C Dyes (Yellow 5, Red 40, Blue 1) — petroleum-derived, sensitizing, stains fabrics
• Erythrulose — a slower-acting tanning sugar; common in formulas that promise "longer-lasting" tans, but pairs poorly with DHA and worsens the orange tone
• Parabens (methyl-, propyl-, butylparaben) — endocrine-disruption questions, replaced by gentler preservatives
• Propylene Glycol — common allergen, irritates sensitive skin
• Phenoxyethanol — preservative with skin-sensitization data
• Silicones (Dimethicone, Cyclopentasiloxane) — coats the skin, can trap DHA and create patchy fade
• PEGs (Polyethylene Glycol) — process contamination concerns (1,4-dioxane)
• Synthetic fragrance — undisclosed mixture of dozens of compounds, a top allergen across all skincare
• Gluten — for celiac and gluten-sensitive customers
• Nuts (and nut-derived oils in the tanning formula) — for allergic customers