Urban Decay · Makeup
Urban Decay Stay Naked Weightless Liquid Foundation - 10WY
Lower PFAS concern for typical liquid foundation; no red flags but no transparency either.
Urban Decay's Stay Naked foundation is a water-based liquid cosmetic with no known PFAS-triggering ingredients (no Teflon-family coating coatings, water-repellent coating treatments, or nonstick additives required). The brand does not publicly disclose PFAS practices.
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water-based liquid foundation (pigments, polymers, silicones, glycerin)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
cosmetics is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
Stay Naked is a water-based liquid foundation containing pigments (iron oxides, mica, titanium dioxide), silicones for slip and blendability, glycerin as humectant, and polymers to set and adhere the formula. This formulation type is inherently lower-risk than oil-based or heavy-metal-laden cream foundations because water-soluble bases do not concentrate lipophilic contaminants and pigment loads are typically disclosed. Silicones in cosmetics are dermatologically tested and FDA-listed safe at cosmetic-use concentrations; they do not bioaccumulate in skin.
The brand's record and disclosure
Urban Decay does not publish ingredient sourcing or heavy-metal testing data publicly, and does not claim third-party certifications like Cruelty-Free Beyond or Clean Beauty standards. The brand is owned by Estée Lauder (a major cosmetics conglomerate) and complies with FDA regulations and EU cosmetic bans, but offers no proactive transparency beyond legal minimum. No recalls, formaldehyde complaints, or talc contamination incidents are on record for Stay Naked specifically.
How it compares in its category
Liquid foundations as a category carry lower inherent hazard than powder formulas (which may contain talc or heavy metals in pigments) or long-wear/waterproof formulas (which may rely on film-forming polymers with higher VOC potential). Stay Naked's water-based, lightweight formulation places it in the mainstream safe zone for liquid foundations; comparable products from Fenty Beauty, MAC Face & Body, and Makeup Forever share similar safety profiles and lack of transparency. No major competitive advantage in safety disclosure.
If you buy it
Shake well before each use to ensure pigment suspension and even color. Do not store above 25 degrees C or in direct sunlight, as silicone polymers and glycerin can separate or degrade under heat. Replace every 12 months or immediately if the formula separates irreversibly, shows mold, or changes odor. Patch-test on inner arm 24 hours before first facial use if you have sensitive skin or fragrance sensitivities, though this product is fragrance-free.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Heavy metals in pigments (lead, cadmium, chromium)
Stay Naked uses FDA-approved synthetic and iron oxide pigments. No lead, cadmium, or chromium contamination has been reported. Titanium dioxide and mica are naturally inert and widely used in mainstream cosmetics without incident.
Formaldehyde releasers
Water-based liquid foundations do not require formaldehyde or formaldehyde-releasing preservatives (such as imidazolidinyl urea or DMDM hydantoin) because glycerin and water-soluble polymers are preserved via phenoxyethanol, methylisothiazolinone, or sorbic acid, none of which release formaldehyde.
Talc contamination
Stay Naked is a liquid formula; talc is not a functional ingredient and is absent. Powder foundations carry residual talc risk, but liquid foundations do not.
1,4-dioxane (cosmetic impurity)
Silicones and glycerin in water-based formulas may contain trace 1,4-dioxane as a manufacturing byproduct, though levels are typically far below detectability in finished products. Urban Decay does not publish impurity testing data, so risk cannot be ruled out but is not elevated vs. industry standard.
Fragrance allergens
Stay Naked is marketed as fragrance-free. No essential oils or fragrance compounds are listed, minimizing contact allergen risk for fragrance-sensitive skin.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
More makeup grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.