Low fumes, Low irritation 1-2s drying time; 6-7 weeks lasting time Ideal Application Conditions: 75.2-78.8F with humidity of RH 45-75% Shelf life: un-open is 6 months, after open is 3 months. Before use: Shake well before use (for 30s - 60s). INGREDIENTS APPROVED BY ITQA Co., LTD - Sky Glue Zone adhesive are medical approved. Sky Zone eyelash glue is FORMALDEHYDE-FREE and LATEX-FREE. The perfect choice for eyelash extensions artists to ensure the quality and safety of the product.