The builder gel must be dried (cured) under a lamp. Polymerization time (depending on the thickness of the layer and the lamp power): UV lamp - 2min. In the hybrid / LED lamp - 60 - 90s. Gel formula makes it very durable, but at the same time flexible throughout the wearing period. Long lasting nails, up to 4 weeks. Gel for nails that does not contain any acidic ingredients! Easy to work with for both beginners and advanced masters. Does not contain any acidic ingredients! 5 FREE FORMULA, NO - formaldehyde, NO - toluene, NO - DBT, NO - Parabens, NO - butanone. Perfect builder gel for repair, extension and modeling of the nails. Ideally smooth and silky texture, medium thickness, that does not run sideways and is self-leveling.