The principle of facial mask replenishing water What is the principle of facial mask replenishing water

Today I will introduce the principle of hydrating facial masks. I believe many people know about hydrating facial masks, but they don’t know how this mask hydrates the skin. Let’s learn about it together.

Introduction to the principle of facial mask hydration

Let me ask you a question, what can facial masks be used for?

Most people would answer that it should be drinking water.

By the way, today’s topic is not facial masks, but hydration.

Let's look at it from the perspective of the skin.

skin

First look at the cross-section of the skin

It's not easy to see clearly, so here's a diagram

Skin moisture content

Then mark the skin moisture content as follows

It can be seen that the moisture content decreases rapidly from dermis to epidermis. . . . Since today we are talking about hydrating the skin, we need to clarify the following questions:

Q1: Why can’t the skin’s water content be 100%?