The answer is: not necessarily. Whether the mask can be applied every day depends mainly on what mask you apply.

Moisturizing mask: If you use a pure hydrating mask, it will have little effect on your skin every day, but it depends on your skin. Generally, oily skin or oily skin, or skin with healthy skin barrier, is not a big problem, but it is still not recommended to do so for a long time. In addition, if you are sensitive to acne muscles or have a thin stratum corneum, even a pure hydrating mask can't be applied every day, which will cause the skin to be overburdened and counterproductive.

Efficacy mask: Efficacy mask mainly refers to products with certain targeted conditioning, such as whitening mask, acne mask and firming mask. Even if the skin barrier of this functional mask is healthy, it will be OK at most twice a week. If sensitive muscles and skin barriers are damaged, try to avoid using such functional masks.

Second: Is it harmful to the skin to apply several layers of skin care products before going to bed?

This answer cannot be generalized.

The first is to look at the skin. If you are a girl with oily skin, try not to wear a variety of skin care products at night, which will increase the burden on the skin, produce more oil, and be easy to keep silent or stuffy acne. But if it is dry skin, then it should be used to keep the skin moist all night, and don't let the skin be too dry.

Second, look at the environment. It is enough to use basic skin care products according to individual skin types when the weather is neither too hot nor too cold or the humidity is ideal in spring and autumn. If the skin is easy to dry and dehydrate in summer air conditioning environment or winter heating environment, moisturizing essence or cream is an essential item at this time to ensure that the skin moisture will not evaporate excessively.