- Tint eyelashes from root to tip, 28 Day Mascara is a non-toxic formula that contains no coal tar derivatives or hydrogen peroxide agents. This fast acting, gentle formula delivers rich, long-lasting color for at least 4 weeks. Processes in less than one minute. No drip formula. Safe and effective. Available in Black and Brown. Note: 28 Day Mascara will only color your lashes. It will not lengthen or thicken them. Kit Contains: 1mL cream colorant, 1mL gel activator, 2 eye shields, applicator stick, and Instruction Sheet.