Do skin care products have a shelf life? How long is the shelf life of skin care products?

Skin care products are something we use almost every day. A good skin care product can help our skin get better and better. In fact, skin care products also have a shelf life. If they are out of date, the effect may not be so good. Therefore, we need to understand here whether skin care products have a shelf life? How long is the typical shelf life of skin care products?

Do skin care products have a shelf life?

have. After opening, products, whether skin care products or cosmetics, will not have such a long shelf life. There is usually an icon on the product that looks like an opened can, with words such as "6M" or "12M" marked on it, which means that the best usage period is 6 months or 12 months after opening. Even different brands of the same product have different expiration dates. It is not like what some people say, that skin care products are generally expiration date of one year after opening, while cosmetics are longer. It is still better to carefully check the icon itself to confirm how long it is expiration date. Therefore, once something is opened, it must be used as soon as possible. Otherwise, if a skin care product is not used up for a year or two, and then you blame the product for being ineffective, it is really a bit unfair to it. In fact, the product has long passed its best before date, and the active ingredients will be oxidized or deteriorate. So I went through all the things I had last night, and sure enough, many of them were expired. Facial cleansing products: Avène products have a very short shelf life, and the same goes for the facial cream that follows.

How long is the shelf life of skin care products?

Many products may have a shelf life of three years, but that is if they are unopened. If they are opened and not used up within a year, they will have lost their activity, and their efficacy will be weakened or even ineffective. For example, some antioxidant and anti-aging products will only have basic moisturizing effects after they have lost their activity. If scrubs, creams, sunscreens, foundations, etc. have floating oil, the floating oil may be a sign of oxidation, and continued use is likely to cause allergies. The surface of water-based products such as lotions, perfumes, and gels is covered with a layer of color due to oxidation. The appearance of brown color indicates that the ingredients contained in them have lost their effectiveness and it is recommended to stop using them. If perfume, gel, cream, sunscreen, lotion, etc. have a different odor than before, it may be that the preservatives have expired and are prone to breeding bacteria. Continuing to use will be worse for the skin. In severe cases, it may even cause allergies. This is only applicable to products that have a different odor from the original. If the smell itself is special, then it is the ingredient of the product itself. For example, the authentic Magic Water has a very strange smell.

Can I mix brands of skin care products?

In fact, skin care products can be mixed in different orders and functions, but you must pay attention to certain mixing rules to ensure correct and effective skin care. When mixing skin care products, it is best not to use skin care products with similar functions. Two skin care products with the same functions will cause excess nutrition to the skin and be detrimental to skin absorption. However, you can choose skin care products with different functions and that are not irritating to the skin and use them together. If you have sensitive skin, it is best not to mix skin care products. Choose anti-allergic or suitable products for sensitive skin. If you must mix products, then choose low-irritation, weakly acidic skin care products to avoid causing skin allergies, redness, itching and other problems. What I am talking about here is that some freckle-removing and anti-aging skin care products, although their main ingredients are anti-aging and freckle removal, are also very hydrating and moisturizing. This type is suitable for middle-aged and elderly women. They contain certain hormones or anti-aging ingredients, but they are not suitable for young skin to use in combination. Young skin may suffer from overnutrition or premature aging if used.

Can I use the same brand of skin care products for a long time?

Although long-term use of the same skin care product will not cause skin sensitivity. But after using it for a long time, you will find that the effect is not as significant as before. This phenomenon is particularly obvious when you use a set of skin care products from a brand. The lotion and emulsion seemed to work well at the beginning, but after using it for a while, it was not as effective anymore. The reason is very simple. In fact, your skin has adapted to this skin care product and is already in a state of fatigue, so the skin care effect will definitely not be as good as before.