Because it takes too long to open the bottle, and frequent contact with air will lead to a lot of bacteria inside, and the composition of facial cleanser will also change. Even if it is used repeatedly, it will not achieve the ideal cleaning effect and even cause skin problems. It is best to use up the general facial cleanser within six months after opening. If this time is exceeded, the facial cleanser may have gone bad.
How to choose facial cleanser:
1, dry skin
This kind of skin is inherently dry. If you use foam cleanser with strong cleaning power again, the moisture on your face will be washed away, which is even more boring. For dry skin, it is best to choose foam-free cleanser or cream, so that the skin will feel fresher.
2, neutral skin
This skin is also the easiest to care for. It is enough to choose foam facial cleanser, but if it is boring in winter, you can also choose foam-free facial cleanser.
Step 3 blend skin
T position of this kind of skin is mainly oily, and cheek position is generally neutral, so this kind of skin should strike a balance between T position and cheek position. You can't choose some products with very strong degreasing power just considering the cleanliness of T position, especially in autumn and winter, so you can use ordinary foam facial cleanser instead because the oil secretion is not so strong in autumn and winter.
4, oily skin
Oily skin secretes more oil than ordinary people, so you need to choose some products with strong cleaning ability, usually you need to choose some soap products. Because soap products have strong oil removal ability and are easy to rinse, the skin feels very refreshing after washing.