Is it okay to use the same brand of cosmetics for several years?

Hello,

Actually speaking, a brand of cosmetics can be used continuously.

However, it is best not to use the same skin care product continuously for many years, because some chemical ingredients may develop a certain tolerance in the skin over time and no longer respond. This is possible phenomenon.

But it depends on the product and the formula of the product. For example, some moisturizing products are just pure glycerin. Obviously, there is no tolerance problem. For example, some hyaluronic acid is used as a moisturizing factor and there is no tolerance problem. However, for some skin care products, the chemical ingredients must be very complex (I don’t know much about ingredient analysis, and I am not a chemistry student), which may cause skin tolerance, so the effect may not be significant after long-term use. For example, products containing slight fruit acids (I'm not sure if this example is appropriate, just to let the poster understand, so in fact, whether fruit acid peels can cause tolerance to the skin, from a scientific point of view, I (I don’t know anything about it), peeling off the stratum corneum may be very effective initially, but as the skin’s tolerance increases, the effect will not be significant.

Theoretically speaking, unless the effects of a single product conflict with other products, for example, after using photosensitive essential oils, such as Clarins' orchid oil, you can then use a skin care day cream containing photosensitive ingredients. Unless there are very special ingredients, there is usually no problem.

The second question is that the so-called use of cosmetics as much as possible is just a commercial promotion method. Many big brands use and emphasize it, but in a practical sense it is unnecessary.

For example, many of Estee Lauder's products are not launched in complete sets, L'Oréal Group's top brand Haolena does not launch products in complete sets, and the second-tier brand Lanc?me, because of its strong commercial content, many products are launched in series.

Speaking of this, there is a very tasteless joke, la

mer flaunts how miraculous his products are, but actually launches them in sets, which is a slap in the face to himself, if That bottle of facial cream worth thousands is so perfect, why does it need the help of other products? It is completely a commercial operation. What's more, this is exactly what la

mer

once advertised, a magical product that completely replaces all products.

So the poster doesn’t stick to the details of matching the products, just use products that suit your skin.