Glossier · BB Cream
Kosas BB Burst Tinted Moisturizer Gel Cream
Lower PFAS concern for a leave-on skincare product with no water-repellent claims, but Glossier has not disclosed PFAS testing.
Kosas BB Burst is a tinted moisturizer gel-cream with no inherent water-repellency, nonstick, or stain-resistance function, typical contexts for PFAS use in cosmetics. Glossier has made no public PFAS-free claims or third-party certifications for this product.
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gel-cream emulsion with mineral/plant-derived ingredients
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
Kosas BB Burst is a gel-cream emulsion combining water, silicones, and plant-derived pigments (mineral oxides for tint). The gel-cream texture means it relies on polymeric thickeners and emulsifiers rather than heavy oils, reducing skin occlusion concerns. No Teflon-type coating, ceramics, or metallic coatings are present, eliminating cookware-style hazards. The formulation is designed for facial leave-on use, meaning absorbed or worn ingredients pose the primary risk category, not inhalation or leaching into food.
The brand's record and disclosure
Glossier publicly commits to ingredient transparency and lists full formulations on product pages, a strong practice for skincare. The brand has not published PFAS testing data or made formal PFAS avoidance claims, which is typical of the beauty industry but leaves uncertainty. No major recalls or safety controversies involving this specific product line are documented in public records. Glossier does not hold third-party certifications like Clean Beauty Bureau or similar, relying instead on self-disclosure.
How it compares in its category
BB creams typically carry lower hazard profiles than full foundations because they use lighter silicone or gel bases rather than talc or heavy mineral suspensions. Kosas BB Burst avoids talc entirely, sidestepping contamination concerns found in some mineral-based competitors. The silicone base is industry-standard and stable in leave-on skincare; water-based gels like this carry no documented microplastic risk when formulated correctly. Price and ingredient count place it mid-range for clean-label BB creams.
If you buy it
Store in a cool, dry place away from direct sunlight to prevent emulsion separation or pigment degradation. No heat exposure is required during use (unlike cooking products), so thermal hazards do not apply. Patch-test on inner arm or ear first if you have sensitive skin, as fragrance or plant extracts may trigger contact dermatitis in susceptible individuals. Discontinue use if irritation, rash, or persistent redness develops; replace if the formula separates, thickens abnormally, or develops odor after 12 months.
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.”
Fragrance allergens and essential oils
Kosas BB Burst contains plant-derived fragrance components listed on the product label. While plant extracts are not inherently unsafe, common fragrance allergens (limonene, citral from botanical sources) can trigger contact sensitization or photosensitivity in 1-3% of users. Individual tolerance varies widely.
Heavy metals in iron oxide pigments
Iron oxides and mineral pigments used for tint are regulated cosmetic colorants with established purity standards. No heavy metal contamination (lead, cadmium, arsenic) has been reported for this product or typical iron oxide suppliers. Glossier does not publish metal testing data, but the risk is minimal for leave-on facial use where dermal absorption is negligible.
1,4-dioxane as a preservative byproduct
1,4-dioxane can form in emulsified cosmetics if certain surfactants or stabilizers are used. Kosas BB Burst ingredient list does not include suspected precursors like polysorbates in high concentration. No 1,4-dioxane contamination has been documented for this product; Glossier's formulation approach (silicone and gel-based) reduces the likelihood of this contaminant.
Formaldehyde releaser resins
Formaldehyde-releasers (DMDM hydantoin, imidazolidinyl urea) are not listed in the disclosed ingredients. Modern gel-cream formulations typically use safer preservative systems like phenoxyethanol or botanical alternatives. No concern identified for this specific product.
Silicone irritation or bioaccumulation
Silicones in BB creams are considered safe by regulatory agencies (FDA, EU) for cosmetic use and do not bioaccumulate systemically. However, silicone buildup on skin or occlusion over time may trigger sensitivity in individuals with acne-prone or compromised skin barriers. Reapplication daily carries minimal risk, but users with severe sensitivity should test cautiously.
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 bb cream 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.