Hardwear Shine UV Topcoat vs Studio Matte Overlacquer: which is safer?
MAC Studio Matte Overlacquer is the clear pick. Butter London Hardwear Shine UV Topcoat carries a failing PFAS grade, and we never recommend buying a failing product.
Butter London
Hardwear Shine UV Topcoat
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleUncured resin monomers (sensitization/irritation)
PossiblePhotoinitiators and UV sensitivity
PossibleFragrance allergens
Our pick
MAC
Studio Matte Overlacquer
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleAlcohol inhalation from spray
PossibleFragrance allergens and sensitizers
PossibleResin irritation on compromised skin
Where these two actually differ
- We flag Uncured resin monomers (sensitization/irritation), Photoinitiators and UV sensitivity, Fragrance allergens and Volatile organic compounds (VOC) off-gassing on the Butter London and not on the MAC.
- We flag Alcohol inhalation from spray, Fragrance allergens and sensitizers and Resin irritation on compromised skin on the MAC and not on the Butter London.
- The Butter London is UV-curable gel topcoat, formula not publicly disclosed where the MAC is liquid cosmetic spray, alcohol and resin based, which is most of the difference in these two grades.
- The gap is 50 points, wide enough that this is not a close call, and the MAC is the one to buy.
- We are less certain about the Butter London grade, at 35% confidence against 72%, because it discloses less.
Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
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