Can be used as Builder Nail Gel & Base Coat & Sheer Color Gel & Nail Reinforce Lacquer. 1-2cm extend would be recommended. Note: The builder base gel would become thicker during cold weather, which is normal. Before applying, you could place the bottles in the warm water for a while to warm it up for better consistency. Please keep in mind apply thin layer each time. | VEGAN & CRUELTY-FREE: AIMEILI gel nail polish products are vegan, cruelty-free and reliable as 90% of the raw materials are produced in USA, Europe. | UPGRADED HEMA-FREE Gel Nail: Natural Resin, Toxin Free, HEMA-Free, HPMA-Free, TPO-Free formula of nail polish gel for nail art make it more gentle to apply to your nails safer and healthier. It is normal for builder base gel for nails to remain sticky after curing, which will make a better adhesion between gel layers. The top coat gel would seal it all in for better nail performance. | Easy to Use & Long-Lasting: With improved consistency of gel nail polish, AIMEILI HEMA FREE builder nail gel is smooth and easy to apply. Soak off Gel Nail Polish need to be cured under nail lamp. Average curing time suggested 30-120 secs. With proper application, you could enjoy 28 days manicure. | DIY Nail Art: The gel nail polish is an ideal gift for Anniversary, Christmas, Birthday, Holiday, Valentine's Day, Mother's Day. Enjoy your manicure nail art time with family, friends at home. BEWARE: May cause ALLERGIC REACTION. Please take SKIN TEST EVERY TIME before doing manicure.