21Days UV nail polish is a gentle UV shellac WITHOUT the questionable, allergenic ingredients HEMA and hydroquinone and is therefore also suitable for allergy sufferers. If used correctly, your new 21DAYS UV polish will last up to 3 weeks, depending on nail type and stress. 21DAYS UV nail polish is completely dry and resilient in a few minutes. 21DAYS UV nail polish can also be removed easily and gently without damaging your natural nails.