Can liquid foundation still be used after three or four years? How to tell whether the liquid foundation is good?

Liquid foundation is a very important base makeup product. Liquid foundation can help cover facial blemishes, brighten and even out overall skin tone. It is a very popular cosmetic nowadays. Liquid foundation has a shelf life and expired liquid foundation cannot be used.

Liquid foundation cannot be used after three or four years. The longest shelf life of unopened liquid foundation is only three years. Liquid foundation cannot be used after it expires, which will have various adverse effects. Liquid foundation that has expired but has not deteriorated can be used on other parts of the body to make the skin color more even and fair. After opening, pay attention to the storage environment of the liquid foundation and store it in a cool and dry place to avoid deterioration of the liquid foundation.

1. The method is very simple. Apply the two foundations on your left and right hands respectively, and spray them with clean water. If they do not dissolve, it proves that the foundation will not dissolve even if you sweat; if they dissolve, it proves that the makeup is easy to come off.

2. Use a transparent glass, fill it with water, then drop a few drops of liquid foundation into the water, and then stir with a cotton swab. If the liquid foundation can be completely mixed with water, it means that the liquid foundation is water-soluble and its ingredients will not clog the pores. If the liquid foundation cannot be mixed with water, it will be granular or have powder attached to the glass.

3. When the water is poured out, the glass is not easy to clean, which means that the foundation is mixed with oil and cannot be absorbed by the skin. Long-term use can easily cause clogged pores and cause acne and blackheads.

4. Breathable foundation can be cleaned thoroughly. Non-breathable foundation, due to its heavy oiliness, must be cleaned with makeup remover. This is because oily foundation is tangentially compatible with the sebum in the pores, and the powder and oil will penetrate deeply into the pores, so it is difficult to clean, causing the pores to become larger and larger with use; breathable foundation will not have these problems.

1. Smell the smell: Liquid foundation is a cosmetic, and a variety of chemical ingredients are added to it. Generally speaking, a good liquid foundation smells good, while a spoiled liquid foundation will have a strong smell of perfume.

2. Look at the condition: Under normal circumstances, liquid foundation will have good ductility, but expired liquid foundation has been denatured internally. After being squeezed out, it has poor ductility and is not easy to apply evenly. In daily life, when using liquid foundation, do not use such liquid foundation even if it has not expired. Regardless of whether it is expired or not, this liquid foundation is not suitable for your skin. Using it will easily destroy the makeup and cause skin problems.

3. Check the date: The most basic way to determine whether the liquid foundation has expired is to look at the date on the liquid foundation. Whether it is the production date or the expiration date, it is acceptable. The usage period of opened liquid foundation is one year, and the usage period of unopened liquid foundation is three years. You can refer to this period for specific details.

Liquid foundation should be stored in a hygienic environment and powder puffs, otherwise it will affect the safety of the skin. Liquid foundation should not be placed in places with high temperatures, as it is easy to deteriorate. It can be placed in a cool place. Prepare some small bottles to pack cosmetics. When storing, make sure to wipe the bottle mouth clean and place it in a cool place so that moisture will not dissipate and bacteria will not easily enter.