What is the original serum?
The original serum in the cosmetics industry refers to a beauty product that adds a relatively single high-concentration skin care ingredient that can more directly act on the skin and restore the skin to its best condition in a short time.

Its composition structure is: water + functional ingredients + preservatives/softening ingredients

The serum is divided into two types: one is the exogenous moisturizing stock solution, such as our daily common hyaluronic acid serum; the other is the functional active substance serum, such as the oligopeptide serum for anti-acne, which is used for whitening and anti-aging Nicotinamide serum.

The role of hyaluronic acid stock solution

It is divided into high molecular, medium molecular, low molecular and HA-Oligo. The sizes are arranged in order. Hyaluronic acid with medium molecular weight is common in skin care products.

1. Humectant

As a humectant, relative to other humectants such as glycerin, propylene glycol, butylene glycol and other ingredients, the environmental humidity has the least influence on its moisturizing ability. Simply put, when the humidity in the air is relatively high, these moisturizers will absorb moisture from the air and give you enhanced moisturization, but if in a dry and harsh environment, they will absorb moisture from your stratum corneum, like a smelly Shameless wall. .

But hyaluronic acid is much better in this respect, and relatively stable.

2. Repair

Hyaluronic acid can promote the proliferation and differentiation of keratinocytes, it can also scavenge oxygen free radicals, strengthen the skin's repair ability, and help damaged skin to repair quickly.

3. Thickening

Strengthen the viscosity of skin care products, this feature should have been realized by everyone.

How to use hyaluronic acid serum?

Although things are good things, they should always be used in the right place. Just like healthy water cannot be used on dry skin, it needs a good place to show its value.

Lotion

Under normal circumstances, adding this hyaluronic acid serum to the lotion is completely okay, but the general lotion will have its own moisturizing ingredients, but there is no need for hyaluronic acid. On the contrary, because of the different preservative system, the two kinds of mixed use may increase the possibility of sensitization.

Essence

Similarly, the moisturizing essence may be added a little, but the functional essence may be diluted after adding the original serum. Although the stimulation is buffered, the function will be compromised. If you are tolerant of this functional essence, there is no need to mix a little bit into it. (The premise is not allergic)

In addition, I also have a my own tip. After cleaning the face, apply toner, and then apply the hydrating serum on the face and neck.

Finally, but most importantly, be sure to pat the skin of the face and neck upward.