Cetyl · Sunscreen
SKIN1004 Madagascar Centella Hyalu-Cica Water-Fit Sun Serum UV 50ml
Lower concern; no PFAS-typical treatment applied to liquid sunscreen serum.
Liquid cosmetic serum with no disclosed waterproof or stain-resistant treatment typical of PFAS use. No brand PFAS disclosure; standard formula poses lower risk than treated textiles or coated cookware.
Shop Cetyl on Amazon →Material
Water-based serum with centella asiatica extract, hyaluronic acid, UV filter (unspecified); no surface coating disclosed
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
This is a water-based serum sunscreen combining centella asiatica (also called cica) extract and hyaluronic acid as active ingredients alongside an unspecified UV filter. Water-based liquid sunscreens typically carry lower chemical complexity than oil-based or heavy emulsified formulations, which reduces the likelihood of problematic preservative systems or stabilizer packages. The centella and hyaluronic acid serve moisturizing and skin-soothing roles and are not known irritants at cosmetic-grade concentrations. The critical unknown is the identity and concentration of the UV filter itself, which determines much of the safety profile.
The brand's record and disclosure
Cetyl/SKIN1004 maintains limited public disclosure on ingredient sourcing, manufacturing audits, or third-party safety certifications. No major product recalls or safety controversies appear in established consumer safety databases for this brand. The brand does not explicitly market PFAS-free or dermatologist-tested claims, suggesting a passive stance on transparency rather than active greenwashing. For a serum-type product from a smaller K-beauty brand, ingredient transparency is below typical Western premium sunscreen standards but not unusual in the category.
How it compares in its category
Water-based serum sunscreens are positioned as lightweight alternatives to cream or lotion formulations and are increasingly common in K-beauty. This product's lack of disclosed UV filter type (mineral vs. chemical) makes direct comparison difficult. Brands offering mineral-only (zinc oxide, titanium dioxide) formulations or full ingredient lists tend to command higher safety confidence; SKIN1004's silence on this point places it in the middle tier of transparency. Centella-enriched sunscreens are not uncommon and the extract itself carries no known safety flags.
If you buy it
Apply generously (approximately 1/4 teaspoon for face) and allow 15 minutes for setting before sun exposure to ensure full UV protection. Store in a cool, dry place away from direct heat or sunlight, as UV filters can degrade under prolonged temperature stress. Sunscreen serums are not products that improve with age; replace yearly or sooner if the formula visibly separates, changes color, or develops odor. If you develop redness, burning, or itching, discontinue and patch-test on a small area first before resuming use.
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.”
Undisclosed UV filter identity
The product does not specify whether the UV filter is a chemical agent (oxybenzone, octinoxate, avobenzone) or mineral (zinc oxide, titanium dioxide). Chemical filters carry documented skin penetration and hormone-activity concerns in some populations; mineral filters are generally regarded as safer but may leave white cast. Absence of this detail prevents full hazard assessment.
Preservative system composition
Water-based serums require preservatives to prevent bacterial and fungal growth. No information is available on which preservatives this formulation uses (phenoxyethanol, methylisothiazolinone, etc.). At typical cosmetic concentrations, modern preservatives carry minimal risk, but sensitivities vary by individual.
Formaldehyde releasers
Centella-based cosmetics occasionally incorporate formaldehyde-releasing preservatives or resins (DMDM hydantoin, imidazolidinyl urea) in cheaper formulations. No public recalls or safety reports tie this specific product to such ingredients, but the lack of full ingredient disclosure prevents definitive ruling.
Heavy metals in botanicals
Centella asiatica extract purity depends on soil sourcing and processing. If the extract is sourced from contaminated regions without quality controls, cadmium or lead can accumulate. No testing data or sourcing transparency from Cetyl is publicly available for this product line.
Fragrance allergens
Many serum sunscreens include fragrance for cosmetic appeal. If present, undisclosed fragrance blends may contain contact allergens (limonene, linalool, etc.) affecting sensitive skin. Product labeling does not indicate fragrance presence or sensitivity warnings.
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.
Safer alternatives in Sunscreen
Goddess Garden
Natural Sunscreen SPF 30 6 oz
mineral-based UV filters, plant-derived waxes
Lower-concern mineral sunscreen with credible PFAS-exclusion certification.
✓Verified PFAS-free by a third party
Raw Elements
Eco Formula SPF 30 Sunscreen
mineral sunscreen (zinc oxide, titanium dioxide)
Lower PFAS concern; mineral sunscreen with third-party verification and no known fluorochemical history.
✓Verified PFAS-free by a third party
Raw Elements
Face & Body Sunscreen Tin SPF 30
mineral sunscreen (zinc oxide/titanium dioxide), tin packaging
Lower-concern choice; mineral sunscreen + explicit PFAS-free positioning + third-party certs reduce risk.
✓Verified PFAS-free by a third party
More sunscreen 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.