Basecoat & Sealer Nail Polish vs ColorStay Gel Envy Longwear Nail Enamel: which is safer?

Where these two actually differ

• We flag Heavy metals in organic pigments, Volatile organic compounds (VOCs) from solvents and Bacterial or fungal growth in water-based formula on the Piggy Paint and not on the Revlon.
• We flag Phthalate plasticizers (dibutyl phthalate or DINP), Volatile organic compounds (toluene, xylene, acetone inhalation), Formaldehyde as hardening agent and Nitrocellulose film degradation and skin irritation on the Revlon and not on the Piggy Paint.
• The Piggy Paint is Water-based organic pigments and plant-derived resins where the Revlon is nitrocellulose-based gel lacquer (polymer film), which is most of the difference in these two grades.
• The gap is 25 points, wide enough that this is not a close call, and the Piggy Paint is the one to buy.
• We are less certain about the Revlon grade, at 42% confidence against 82%, because it discloses less.