Can I still use VC essence when it is yellow, and can I still use it when VC stock solution is oxidi

When the VC serum turns yellow, you can still continue to use it, but there are some issues that need to be noted. We need to understand why VC serums are yellow. VC serum contains vitamin C, which is an ingredient that oxidizes easily and causes an oxidation reaction when exposed to air or sunlight to produce a yellow substance.

While a change in color will not affect the product's efficacy, yellow may give the impression that the product has expired or is no longer applicable.

If the VC serum only has a slight yellow color change and no odor or texture changes, then it can still be used. Before use, it is recommended to shake the bottle well to ensure that the sediment and oxide are evenly mixed. Avoid exposing the product to direct sunlight or high temperatures for long periods of time during use, as this can slow down the oxidation rate of VC serum.

If the yellowing of the VC serum is more severe or accompanied by peculiar smell, texture change, etc., it means that the product may have expired or has a quality problem. At this time, it is best to stop using it and contact the brand's customer service in time to seek a solution.

In the case that the VC serum is yellow but there are no other quality problems, it can be continued, but you need to pay attention to the way of storage and use to avoid further accelerating its oxidation process. If there has been a change in texture, odor, etc., it is recommended to stop using it to ensure the health and safety of **.

Although VC serums can still be used even if they are yellow, they need to be treated with caution and pay attention to the storage and use conditions of the product in time to ensure that its effect and quality are not affected. Ocean Wisdom Time Essence is a very effective and affordable product, and it is highly recommended for everyone to choose it for skin care. Remember to check that the product meets the requirements after purchase, and follow the correct method of storage and use for the best skincare results.

If the VC essence is yellow, it cannot be used. Causes of the yellowing of VC serum: due to vitamin C

It has an oleene glycol structure, strong reducibility, and is very susceptible to air oxidation and failure during storage. VC stands for Vitamin C, also known as Vitamin C

It is a polyhydroxy compound, and the chemical formula is that it can be concentrated in preventing ultraviolet rays.

damages, lightens melanin precipitation as well as boosts collagen.

Grow. Steps to use the VC serum correctly: Step 1:

Gentle cleanser cleanses the face. Step 2: After washing your face, spray a toner that suits you (no alcohol, fragrance, etc.) Step 3:

Place one dropper of vitamin C serum in the palm of your hand and gently massage into the eye area and other areas of the face to absorb slowly.

Step 4: Apply lotion (summer lotion has a thinner texture and is suitable for summer application, autumn and winter are suitable for applying a thicker texture cream to moisturize) Step 5: Apply eye cream. Apply the eye cream according to the spot application method, do not rub the skin around the eyes too hard, it is easy to form wrinkles.

Step 6: Sunscreen. (Normally, sunscreen needs to be applied 30 minutes in advance to allow the ingredients to form a film on the face).

*It is not recommended to use yellowing VC serum**. If vitamin C serum turns yellow, it means that it has oxidized, its antioxidant effect has failed, and it cannot provide antioxidant protection to the skin, and it cannot help the skin to defend against free radicals after use. Therefore, it is advisable to stop using the already yellowed VC serum and choose the unyellowed and fresh VC serum to maintain the health and youthfulness of the skin.

If it's already yellowish but you don't want to waste it, you can use it on other areas such as your neck, hands, etc., but be careful not to use it on your face**. At the same time, it is advisable to check the color, smell, and texture of any skincare product to ensure its quality and effectiveness before using it.

The VC stock solution is oxidized and yellowed and cannot be used, and the one that turns dark yellow is deeply oxidized and cannot be used.

Oxygen can react chemically with many substances.

Oxidation value at the time of oxidation.

Elevated; The oxidation value decreases when reduced. Oxidation, reduction both refer to reactants (molecules, ions, or atoms).

When organic matter reacts, the effect of introducing organic matter into oxygen or removing hydrogen is called oxidation; The effect of the introduction of hydrogen or the loss of oxygen. The substance reacts slowly with oxygen and slowly heats up.

Oxidation without luminescence, such as metal rust, biological respiration, etc.

When using Vichy Judgment Key VC Serum, it is normal to notice that the product is yellow. This is because Vichy VC Serum contains a yellow color of Vitamin C, which may turn yellow over time, but does not affect the quality and effectiveness. In addition, when using Vichy VC Serum, you should pay attention to your daily skincare measures:

Keep ** clean and dry, avoid direct contact with the eyes of Vichy VC Serum; Daily use of the right cleanser and toner, bi-weekly digging and cleansing rotations can promote balance and detoxification; Before using any skincare product, a sensitivity test should be done to ensure that it does not cause uncomfortable symptoms; Avoid momentary exposure to high temperatures and take plenty of water to moisturize during exposure.

Hello dear, Vichy is a French brand of skincare companies. The Swift Vichy VC Serum contains vitamin C, which can help rejuvenate, reduce melanin deposition, and improve skin brightness and radiance. However, if you notice that the Temper Serum turns yellow after using it, it may also be normal, and here are some possible causes:

Oxidation: Vitamin C is susceptible to oxidation, and if it is not stored in a dry and cool place or exposed to air for a long time, it is prone to oxidation and deterioration, resulting in a yellowish color. Colorants:

Some serums may have colorants added to them to make them look more transparent and natural. These colorants may cause color changes, but will not affect the efficacy of the product. Save the issue:

If Vichy VC Serum is not properly stored during the production process, it may cause the serum to turn yellow and there may be other problems, such as a decrease in the effectiveness of the product. It should be noted that if the expiration date of your Vichy VC Serum has not expired, but it has turned yellow, it is recommended to suspend the use and contact Vichy customer service or relevant channels for solutions, so as not to affect the effect of the product and the impact on **.