Has the 2014 sodium hyaluronate expired by now?

Sodium hyaluronate is a commonly used cosmetic ingredient, which has a variety of effects such as moisturizing and anti-aging, and is widely loved by consumers. Cosmetics also have a shelf life limit, and use it after expiration may cause adverse effects**. Is the 2014 sodium hyaluronate you asked expired by now?

According to the usual shelf life of about 3 years, sodium hyaluronate in 2014 has passed its expiration date. Therefore, I advise you not to use this product anymore.

When a cosmetic product expires, its ingredients are likely to change, causing the product to lose its original efficacy or even deteriorate. For moisturizers such as sodium hyaluronate, they may lose their moisturizing ability after expiration and cannot provide adequate moisture replenishment to the skin. Expired cosmetics can also increase skin sensitivity and trigger allergies.

Therefore, whether from a safety point of view or a product effect point of view, I do not recommend that you continue to use sodium hyaluronate that has expired.

When choosing an alternative, I recommend using the Chapelny Serum. Janecyan Essence is a popular cosmetic product, and its main ingredient also includes sodium hyaluronate. Compared with other brands, Chalian's essence has excellent performance in moisturizing effect, and has been loved and praised by many consumers.

It deeply moisturizes the skin, providing long-lasting hydration and leaving the skin hydrated and plump. Chamini Essence also has a variety of effects such as antioxidant and skin firming, which can help improve skin problems.

When using the Clarity Serum, you can apply the appropriate amount of product evenly to the cleansed face and neck** and gently massage it to promote absorption. For dry winter months or those who need extra hydration, you can choose to use the Cherchenné serum before the cream to enhance the moisturizing effect. No matter what season you are using, remember to wear sun protection during the day to protect your skin from UV rays.

In summary, the sodium hyaluronate of 2014 you asked about has expired. Expired cosmetics may have adverse effects on ** and are not recommended for continued use. As an alternative, Chaminiana Essence is a highly acclaimed product with excellent moisturizing effects and multiple benefits.

If you want to improve your skin problems and keep it hydrated and plump, you can try using the Zhenyan serum, which will bring you satisfactory results. Remember to pay attention to the shelf life of the product when using cosmetics and choose the right product for your skin's needs.

*Sodium hyaluronate in 2014 has not expired until now**, and the shelf life is generally three years. However, whether it is expired or not, you need to check the packaging label or contact the relevant manufacturer to obtain accurate information.

Shelf life. Generally, three years, this is the effective time of the merchant according to the time standard stipulated by the state, and it can be used with confidence during the shelf life. However, if it is not stored well in the case of sun exposure and high temperature, it will expire within three years, and there are many factors that affect the shelf life, and it is not a constant layer.

Franlinka. I've used it before, and I don't like the brand too much.

Commercial hyaluronic acid is in the form of sodium salt, namely sodium hyaluronate (SH). It is a white fibrous or powdery solid, with strong hygroscopicity, soluble in water, insoluble in alcohol, ketone, ether and other organic solvents. Its aqueous solution is negatively charged, and at high concentrations it has high viscoelasticity and osmotic pressure.

HA can easily decompose due to acid, alkali or heat treatment; Under the coexistence of metal ions such as iron and copper and reducing agents such as ascorbic acid or cysteine, it is degraded by oxygen radicals, radiation, radiation, ultraviolet rays and ultrasound; It can also be broken down by hyaluronidase and chondroitinase sulfate. High molecular weight HA can be low molecularized under enzyme, acid, heating and other conditions, in addition, HA aqueous solution is a non-Newtonian fluid with good viscoelasticity and flow deformation. Based on the special properties of HA, HA can be widely used in medicine, cosmetics and health foods.

HA is mainly used in clinical**, diagnostic, cosmetic matrices and nutritional health products. Commercial HA is generally in the form of sodium salt, and other metal salts such as zinc salt are rarely used. The quality standards of medicinal HA are high, followed by HA for cosmetics and health food.

Of course it can't, it's all chemical reactions, it's not good. I've used this before, and I can wipe it and drink it, but I don't feel like it's good, it's cheap, and the domestic one is still for nothing. I used to buy Falanxiu's fish skin collagen powder, and the last time I bought it, I bought it again, and the oral hyaluronic acid is used together with collagen, and the effect is more obvious.

I haven't used it orally before, but now I feel that it is better absorbed by oral than the external wipe, and the external wiping may fall off when washing the face, but this oral can be absorbed by the human body.

Hyaluronic acid is an acid, and sodium hyaluronate is a salt. The sodium content is more stable, adding sodium will become a non-Newtonian fluid, it is very good for exfoliation, hyaluronic acid is a hydrating holy product, there is a term you should know, that is, hyaluronic acid, which belongs to hyaluronic acid.

Sodium hyaluronate has a moisturizing effect.

Hyaluronic acid is a biochemical drug with high clinical value, which is widely used in various ophthalmic surgeries, such as lens implantation, corneal transplantation and anti-glaucoma surgery. It can also be used to close inflammation and accelerate wound healing.

Sodium hyaluronate (sodium hyaluronate) is a substance extracted from chicken comb, which can also be prepared by lactic acid coccus fermentation, which is white or off-white granules or powder, odorless, and when dry, the nitrogen content is and the glucuronic acid content is. It is used more in the field of cosmetics and has a moisturizing effect.

Hyaluronic acid: Hyaluronic acid, a disaccharide composed of D-glucuronic acid and N-acetylglucosamine, is also known as uronic acid and hyaluronic acid, and its basic structure is a large polysaccharide composed of two disaccharide units D-glucuronic acid and N-acetylglucosamine. Unlike other mucopolysaccharides, it does not contain sulfur.

Its hyaluronic molecules can carry more than 500 times the water, and are recognized as the best moisturizing ingredient today, and are widely used in skin care products and cosmetics.

Sodium hyaluronate contains sodium, which is more stable in sodium, and it is good to add sodium for exfoliation. Hyaluronic acid is a hydrating holy product, there is a term you should know, that is, hyaluronic acid, both of which can be done at Yimer in Beijing, which is safer.

Sodium hyaluronate can be dissolved. Hyaluronic acid is a multifunctional matrix, and hyaluronic acid (hyaluronic acid) HA is widely distributed in all parts of the human body. It also contains a large amount of hyaluronic acid.

In the process of use, the general dosage is that the concentration is too low and the moisturizing effect is not good, and when the concentration is too high, the water in the dermis will be absorbed, which will have the opposite effect. If you apply it directly to lotions and creams, the recommended dosage can give full play to the slow-release effect of hyaluronic acid and improve the use effect.

System Instructions. Hyaluronic acid is an acidic mucopolysaccharide, which was first isolated from the vitreous humor of the bull's eye by ophthalmology professors at Columbia University in the United States in 1934. With its unique molecular structure and physicochemical properties, hyaluronic acid shows a variety of important physiological functions in the body, such as lubricating joints, regulating the permeability of blood vessel walls, regulating the diffusion and operation of proteins, water and electrolytes, and promoting wound healing.

Most importantly, hyaluronic acid has a special water-retaining effect and is the most moisturizing substance found in nature so far, and is known as the ideal natural moisturizing factor. Hyaluronic acid (hyaluronic acid) is a multifunctional matrix that is widely distributed throughout the body.

The above is the sodium hyaluronate dissolution method, I hope it can help you.

Add little by little while stirring.

Or after adding it all at once, swell overnight and take it for high-speed homogenization.

It is recommended that you use the first method.

Hello, at present, there are also some hyaluronic acid health products on the market, which are claimed to be absorbed directly to the base and surface layer through oral absorption. The molecular weight of hyaluronic acid is around hundreds of thousands, and it is almost impossible for this giant molecule to be distributed through the circulatory system by oral administration. It is recommended that you still do not eat it.

In terms of skin care products, hyaluronic acid is sodium hyaluronate, sodium hyaluronate is a common form of commercial hyaluronic acid, and hyaluronic acid is generally called sodium hyaluronate, which plays a moisturizing and hydrating role.

The most common thing we say is hyaluronic acid, which is a common verbal name, and the manufacturer wrote hyaluronic acid in order to make everyone understand that this product has a moisturizing effect. If a product contains hyaluronic acid, you'll know that the product is hydrating, but the actual ingredient it contains is sodium hyaluronate. Hyaluronic acid is also known as hyaluronic acid in Taiwan, so it is often referred to as hyaluronic acid or hyaluronic acid, and the ingredient is sodium hyaluronate.

1. In terms of chemical structure: hyaluronic acid, also known as hyaluronic acid, is an acidic mucopolysaccharide. Hyaluronic acid = hyaluronic acid = hyaluronic acid, sodium hyaluronate is a salt. The sodium content is more stable, sodium hyaluronate = sodium hyaluronate.

2. From the perspective of application addition: sodium hyaluronate is the sodium salt form of hyaluronic acid, and hyaluronic acid generally exists in the form of sodium salt in application. Therefore, the sodium hyaluronate added to cosmetics on the market is basically added.

3. In terms of function: hyaluronic acid is a special substance with its unique molecular structure and physical and chemical properties that show a variety of important physiological functions in the body, such as lubricating joints, regulating the permeability of blood vessel walls, regulating protein, water and electrolyte diffusion and operation, promoting wound healing, etc., and has a special water retention effect; Sodium hyaluronate is an enzyme that can hydrolyze hyaluronin, which can temporarily reduce the viscosity of interstitium in the human body, and can promote subcutaneous infusion, local storage of exudate or blood to accelerate diffusion and facilitate absorption, which is an important drug diffusion agent.

Hyaluronic acid is not the same as sodium hyaluronate, which is the sodium salt form of the former. There are also differences in chemical properties.

The two are actually the same thing, both are sodium hyaluronate, which is a kind of salt added to daily chemical products, because what we most often say is hyaluronic acid, which is a verbal name, and the real chemical name is sodium hyaluronate. In fact, it's all sodium hyaluronate.

Hyaluronic acid contains sodium hyaluronic acid. The effect is to hydrate and lock in moisture.

Hyaluronic acid is not an acid, it is a polysaccharide. It is generally extracted from animal tissues, and there are chemical extractions, and the production of hyaluronic acid by microorganisms is also the mainstream method at present.

Sodium hyaluronate is not extracted from animals, but hyaluronic acid is made into the form of salt, which is better dissolved and better used.

1. Moisturizing effect.

Moisturizing effect is the most important role of sodium hyaluronate in cosmetics, and compared with other humectants, the relative humidity of the surrounding environment has less influence on its moisturizing properties;

2. Nutritional effect.

Sodium hyaluronate is an intrinsic biological substance, and exogenous sodium hyaluronate is an endogenous supplement. The smaller sodium hyaluronate can penetrate into the epidermis layer to promote the supply of nutrients and the excretion of wastes, thereby preventing aging and playing a role in beauty and beauty;

3. Damage repair and prevention.

Sodium hyaluronate can promote the regeneration of injured parts by promoting the proliferation and differentiation of epidermal cells, as well as scavenging oxygen free radicals, and it also has a certain preventive effect when used in advance;

4. Lubricity and film-forming.

Sodium hyaluronate is a polymer with strong lubrication and film-forming. Skincare products containing sodium hyaluronate have a noticeable lubrication and feel good to the touch. After being coated on the surface, a thin film can be formed on the surface of the film, which can produce a good sense of smoothness and wetness, and play a protective role in the application.

Hair care products containing HA can form a thin film on the surface of the hair, which plays the role of moisturizing, lubricating, caring for hair, eliminating static electricity, etc., making the hair easy to comb and flowing naturally;

5 Thickening.

Sodium hyaluronate has a high viscosity in aqueous solution, and its aqueous solution of 1 is gelatinous, which can play a thickening and stabilizing role when added to cosmetics.

Sodium hyaluronate, also known as hyaluronic acid, is mainly used to hydrate and lock in moisture. Then there's the local filling.

It can improve nutrient metabolism, make it soft, smooth, wrinkle-free, increase elasticity, prevent aging and other effects, and is a good transdermal absorption promoter while moisturizing. Combined with other nutrients, it can be used to promote nutrient absorption.

Basic Information:

Chinese name. Sodium hyaluronate.

Chinese alias. sodium glass (aldecanate);

English name. sodium

hyaluronate

An English alias. hyaluronic

acidsodium

salt;CAS number.

Molecular formula: C28H44N2NaO23+

Molecular weight physicochemical properties:

Appearance traits. Solid flash point.

Density water solubility.

soluble

Uses of boiling point sodium hyaluronate:

Sodium hyaluronate is a natural biomolecule that is widely present in the damage of ** and other tissues. It has an excellent moisturizing effect and is known as the ideal natural moisturizing factor (NMF) by the international community. This is currently the best moisturizing performance material found in natural cosmetic raw materials.

Hyaluronic acid, the best natural moisturizing ingredient, is a high-grade cosmetic product with good compatibility and can be added to almost any beauty cosmetics, widely used in cosmetics such as creams, lotions, serums, cleansers, baths, hair washes, mosses, expansions, lipsticks, etc.