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Emulsion is a kind of liquid cream skin care products, because it looks pure white as milk, so called emulsion. The lotion has a good moisturizing effect and also has a moisturizing effect. It is especially suitable for use in dry spring and autumn. If the skin is neutral, it can also be used in winter. When used in spring and autumn, in addition to the moisturizing effect, it can also isolate the outside dry climate, prevent the skin from losing moisture too fast, and avoid the skin from cracking and peeling. It is a skin care product that must be used when going out in the dry season.

Composition of 1. Emulsion

The composition of the emulsion is similar to that of the solid cream, but the solid oil, the former is less than the latter, in fact, the formula must be selected according to the characteristics of the required products, from the use of performance, stability and viscosity and other factors. Among the main components, there are hydrocarbons or esters, higher alcohols, fatty acids, etc. Surfactants include fatty acid soaps and non-ionic surfactants. Examples of the aqueous component include purified water, lower alcohols, polyhydric alcohols, and water-soluble polymer compounds.

Emulsion preparation techniques are generally more difficult than solid creams because the emulsion should have both good flow and stability to avoid delamination during storage. The emulsion with good stability can be obtained by taking the following measures.

(1) Select the oil phase and water phase with similar density.

(2) Select appropriate emulsifiers, such as the selection of two or more emulsifiers with synergistic effects than the use of an emulsifier alone is better.

(3) Add gum to increase the continuous viscosity.

(4) Use a homogenizer.

(5) When polyethylene glycol (600) stearate, polyoxyethylene wool alcohol ether and polyoxyethylene cholesterol ether are added, the stability of the emulsion can be increased.

In order to avoid and reduce the phenomenon of emulsion and thickening, the amount of hard fat and its derivatives or cetyl alcohol should not be large. In addition, the increase of low viscosity white oil, oleyl alcohol or low melting point of isomeric fatty acid esters can also reduce the thickening phenomenon of emulsion.

The polyethylene glycol was dissolved by heating with water, maintaining 70 degrees (water phase) to mix the remaining ingredients, and dissolved by heating, maintaining 70 degrees (oil phase). The oil phase was added to the aqueous phase, emulsified, and emulsified in a homogenizer, and finally cooled to 30 degrees with stirring.

Formulation Example 1% by weight: stearic acid 2.5, cetyl alcohol 1.5, vaseline 5, liquid paraffin 10, polyoxyethylene (10) monooleate

2, polyethylene glycol 1500 3, triethanolamine water 1, refined water 74.5, fragrance 0.5, preservative amount.

Formula Example 2,%(by weight): stearic acid 1.5, cetyl alcohol 0.5, beeswax 2, polyoxyethylene (10) monooleate 1, glycerol monostearate 1, warm neck leaching solution (5% aqueous solution) 20, propylene glycol 5, ethanol 10, refined water 58.5, perfume 0.5, appropriate amount of dye, ultraviolet absorber and preservative.

The propylene glycol, dye melt in hot water, keep 70 degrees (water phase). Dissolve the perfume and ultraviolet absorber in ethanol (alcohol phase). The components other than the warm neck leaching solution were mixed and heated to dissolve, and kept at 70 degrees (oil phase). Add the oil phase to the water phase, pre-emulsify and then evenly emulsify with a homogenizer, stir, add the alcohol phase and warm neck leaching solution, and finally stir and cool to 30 degrees.

Formula 3,%(by weight): microcrystalline paraffin 1, beeswax 2, lanolin 2, liquid paraffin 20, isotridecane 10, sorbitan sesquioleate 4, polyoxyethylene (20) sorbitan monooleate 1, propylene glycol 7, refined water 53, proper amount of fragrance and proper amount of preservative.

Propylene glycol was dissolved in hot water and maintained at 70 degrees (water phase), and the other components were mixed and heated to dissolve and maintained at 70 degrees (oil phase). The aqueous phase was slowly added to the oil phase with stirring, emulsified with a homogenizer, and then cooled to 30 degrees with stirring.

2. emulsion type

Emulsion as moisturizing skin care products, in addition to the effect, in the use of more convenient than make-up water. In the relatively dry season, if the skin moisture loss is too fast, you can carry the emulsion with you and use it at any time.

The lotion is not to be applied to the whole face at the same time, but to be applied wherever it is driest. If you haven't used eye cream, apply the eye circumference first, then the cheeks, both sides of the mouth, upper and lower jaws, etc. After these parts are applied, apply the whole face, and the dry parts will be moistened doubly. If there is color eye cream, it is OK to apply eye cream directly around the eyes.

Apply lotion neither with the palm of your hand nor with your fingertips, but with the strength of your fingertips, which is moderate and elastic, and your skin feels most comfortable. Apply the emulsion to add the massage action, it is more conducive to the absorption of the skin. Massage from the central part of the face to do a gentle massage push, until the skin is completely absorbed. The lotion is mostly designed for dry skin, but if the lotion is marked as "refreshing", it means that it will have less oil content and is more suitable for mixed or oily skin.

The needs of our skin are different in the morning and evening. The emulsion used during the day must take into account the factors of ultraviolet rays, so it is recommended to choose a protective emulsion with UV effect. At night, the skin will automatically enter the repair stage, so you may as well choose emulsion with whitening, moisturizing, repair and other functions.

Generally speaking, the amount of emulsion used will not exceed the amount of lotion, which is about the size of 0.10 yuan coins. But if sometimes you feel very tired or dark skin color, it means that the skin needs more moisture and nutrition. At this time, you should increase the amount of use, use two to three coins, so that the skin can get more moisture and nutrition.

Lotion cannot replace lotion

No matter how much you apply, high moisturizing lotion, lotion or lotion, it is only temporarily moisturizing the skin. It is almost impossible to keep the moisture of the lotion in the skin. Only by using lotion can the moisture be well "sealed" in the skin. Some people often use lotion only on the face and ignore the neck, in fact, the neck part of the oil secretion is very small, more need to supplement water and oil, so we must form a skin care habit, every time you apply skin care products to extend the action to the neck, apply to the same skin care products as the face, not to mention the neck is the key part of the woman's age!

3. method of use

Emulsion is an oil-in-water type emulsifier, which has a good humidity control effect and can play a moisturizing effect. Therefore, lotions are loved by ladies. However, for some users, they do not know the correct method of use, so they can not fully play the role of the emulsion.

When using emulsion, you should follow the order of where to apply it first. Without using eye cream, you should apply eye circumference first, then cheeks, corners of the mouth, upper and lower jaws, etc. Emulsion is not to apply the whole face at the same time. If it is too greasy, you can wipe it off with wet paper towel. If you have already used eye cream, you can apply eye cream directly around your eyes. Apply the lotion with the strength of your fingers, neither with the palm of your hand nor with your fingertips. Use a moderate amount of finger pulp strength so that the skin feels most comfortable.

Smear lotion plus massage action, this is more conducive to skin absorption. When nursing, gently massage from the central part of the face to the outside until the emulsion is completely absorbed by the skin. The lotion is mostly designed for dry skin, but if the lotion is marked as "refreshing", it means that it will have less oil content and is more suitable for mixed or oily skin.

The needs of skin in the morning and evening are different. When using emulsion during the day, ultraviolet rays should be taken into account. It is recommended to choose protective emulsion with UV effect. At night, the skin will enter the automatic repair stage, so you may as well choose emulsion with whitening, moisturizing, repair and other functions. Under normal circumstances, the amount of emulsion will not exceed the amount of lotion, about the size of a dime coin. However, if you feel that your skin is very tired or your skin is dark, it means that your skin needs more moisture and nutrition. At this time, you should increase the amount of emulsion and use two to three coins to get more moisture and nutrition for your skin.

The lotion is only temporarily moisturizing the skin and cannot replace the lotion. If you want the moisture of the lotion to remain in the skin, you can use the lotion to achieve it. When using lotion, apply it to the neck. The amount of oil secretion in the neck is very small, and it is necessary to add water and oil. Therefore, we must develop a good skin care habit and extend the action to the neck every time we apply skin care products.

Benefits of 4. Emulsion

The texture of the emulsion is refreshing, so the emulsion is suitable for summer or oily skin, while the texture of the cream is thick and focused, suitable for dry season and dry skin. Emulsion molecular particles are small, absorb fast, and the moisturizing type of cream is strong, so emulsion and cream have advantages and disadvantages, apply emulsion during the day, apply cream maintenance at night, the effect is doubled.