Will the liquid foundation change color if it is left for a long time?

Liquid foundation will change color if it is left for a long time. Because minerals, essential oils and other ingredients will be added to the liquid foundation, these ingredients will be oxidized after contacting with air. If the liquid foundation is left for a long time, it may be turbid and discolored because the air enters the bottle during use and cannot be discharged after the liquid foundation is not used for a long time.

To see if the liquid foundation has deteriorated, we need to judge from its color and smell. For example, if some liquid foundations are used for a long time, the powder inside will become particularly thin, and some powders will dilute some water and the color will be turbid. When used on the skin, the powder and water are completely separated, and the water and oil are completely separated, so this liquid foundation can't conceal the concealer.

Many liquid foundations are tasteless. When it is found that there is pungent smell or sour taste in the liquid foundation, at this time, the liquid foundation is on the edge of deterioration or has deteriorated, and some liquid foundations also have black spots or reticular molds, which is also an important manifestation of the deterioration of the liquid foundation. Generally, the shelf life of liquid foundation is within 12 months after opening. As long as the liquid foundation is used within 12 months, it will not cause harm to the face.

The normal color of liquid foundation is very transparent and looks pink or milky yellow, so this liquid foundation is the normal color. Expired liquid foundation will not only become cloudy and brown, but also produce harmful substances and skin irritation after long-term exposure to air.