Made of non-toxic and harmless ingredients, minimal smell, color resistant, shiny resistant, and last for around 2 – 3 weeks with proper application. No chips or smudges, not peeling off easily. The topcoat makes nails glossy and shiny, prevents nails from abrasion. Please always apply a thin layer each time. too much coat or gel might cause a burning feeling when curing under a nail lamp. Please clean gel around nails prior to curing as well! My sweet nail extension gel dry very fast, the curing time for the led lamp is only 30 – 60 s. Perfect for personal nail diy art use at home and professional salon beauty shop. You can use them for parties. The poly nail gel set is packed with a beautiful gift box. You can purchase it as a gift suitable for all kinds of female ages. Brilliant gifts for birthdays, anniversaries, valentine’s day, mother’s day, or other festivals.