Pay attention to the deadline!
It is not allowed to use cosmetic products for a long time, longer than recommended, because expired products damage the structure of the skin, become a center of infection, an ideal shelter for bacteria.
Mascara
It should be changed every 4-6 months or as soon as it dries and you notice deposits in the mass, the smell will change.
Eyeliner
Average life span 1 year.
The pencil liner should be replaced if the tip becomes greasy or a white layer forms on the surface.
Wet liner should be renewed every 6 months. It has expired if it has become thick and acquired a specific smell.
Foundation
Average life span: one year
Most formulas—liquids, creams, and compacts—can last up to a year if kept out of direct sunlight and away from heaters. But once your liquid starts to separate, your cream thickens, or your compact color develops a rubbery aroma, it's time to toss it.
To extend the life of your foundation, use a cotton swab when dipping it into bottles. If you use a compact, wash the puff or sponge every few weeks.
Blush and eyeshadow
You can use it for 1 to 2 years.
Lipstick
You should change your lipstick every 8 months.
If you applied the lipstick when you had herpes or another type of infection, consider it no longer suitable and should be thrown away.
Makeup brushes
It has a term of 1 or more years, depending on the type.
Source: