The difference between oil-in-water and water-in-oil

There is a lot of knowledge to learn about emulsification technology. For the general public, we know too little about emulsification technology. Water-in-oil and oil-in-water are for emulsification technology. Many friends who don’t understand may not know what it means at first. To help everyone better understand emulsification, the following article mainly introduces the difference between water-in-oil and oil-in-water. I hope the content of the article can be helpful to everyone to a certain extent!

The difference between oil-in-water and water-in-oil is the difference between different emulsifiers

1. Oil-in-water ------ Have you seen an air balloon? Balloons can hold air, and of course they can also hold water. Let's call it balloon-in-water. If the balloon skin is changed to be made of "oil film" and water is put inside, it is oil-in-water. However, in microemulsification technology, the "oil film" that surrounds water is made of surfactants.

2. Oil-in-water-----You can also use a balloon to hold oil. Change the balloon skin into a "water film" and put the oil inside. We call it oil-in-water. Similarly, in microemulsification technology, this "water film" is also made of surfactants.

3. Scholars often refer to "oil film" and "water film" as gum balls, capsules, micelles, etc. The term micelle is the most commonly used, but some are simply called "shells".

4. In microemulsification technology, oil-in-water is called reverse micelle, and water-in-oil is called positive micelle.

5. The outer layer of the oil-in-water "shell" is lipophilic, so it can mix with oil. The outer layer of the water-in-oil "shell" is hydrophilic, so it can mix with water. This is the difference between them.

6. The above is only used in microemulsification technology. When the oil is more than the water in the emulsification technology, I think it is better to call it W/O type (or O-part W type). When the water is more than the oil, it should be called O/W type (or W-part O type). This is also to avoid conflict with the microemulsification technology.

Skin care products are divided into two types: oil-in-water and water-in-oil. When replenishing water, choose water-in-oil.

Is lotion easily absorbed? A glass of water can really tell. Simple test method

Water test lotion type. Simply put, it can be divided into two dosage forms: water-in-oil and oil-in-water. The water-in-oil type is easier to absorb and more refreshing, while the oil-in-water type is difficult to absorb.

Tools A glass of water

Procedure: Take a mung bean-sized amount of lotion or cream and put it into water. Usually the oil-in-water type will float on the water surface, and with a slight stir it will slowly dissolve and turn milky white. In contrast, most water-in-oil lotions or creams sink below the water surface and are not easily soluble in water.