A mascara tube is a small container holds mascara

A mascara tube is a small container that holds mascara, a type of cosmetic used to darken, lengthen, and thicken the eyelashes. Mascara is applied by brushing the brush, which is typically made of plastic or rubber bristles, through the eyelashes to coat them with the mascara formula. The brush is usually attached to a wand that is inserted into the mascara tube. The tube is designed to dispense the right amount of mascara onto the brush with each use. Some mascara tubes may have a screw-on cap or a cap that snaps on and off, while others may have a brush that twists or pushes up and down to dispense the product. Mascara tubes are typically small and portable, making them easy to carry in a purse or makeup bag.
Mascara is typically applied using a small, brush-like applicator that is attached to the top of the tube. The brush is used to apply the mascara to the eyelashes, helping to create a more defined and dramatic look. Many people use mascara as part of their daily beauty routine to enhance the appearance of their eyes and make them stand out.
A mascara tube is typically designed to dispense the right amount of mascara onto the brush with each use, so that you can apply the product evenly and without wasting any excess. Most mascara tubes have a small opening at the top through which the brush emerges, and the brush is then coated with the mascara by squeezing the tube gently. The amount of mascara that is dispensed onto the brush can be controlled by the pressure applied to the tube, so you can apply as much or as little as you like depending on the desired effect.