If I inject hyaluronic acid that has expired for a year and it is not opened, will it expire?

Hyaluronic acid is a well-known skin care product. It can be applied directly on the face and can also be used with other skin care products. What will happen if you inject hyaluronic acid that has expired for a year? Will unopened hyaluronic acid expire?

Hyaluronic acid is familiar to many people. It can be used as a skin care product to make the skin on the face more hydrated and lustrous. What will happen if you inject hyaluronic acid that has expired for a year? Will unopened hyaluronic acid expire?

What will happen if I inject hyaluronic acid that is one year expired?

1. Skin allergies

The condition of the skin is a dynamic process. Sometimes, if you have sensitive skin, using hyaluronic acid during the period of sensitive skin is likely to cause rashes, itching, swelling and pain after use. Once these conditions appear, you must immediately wash off the hyaluronic acid on your face. If you feel the situation is serious, you should go to the hospital immediately for medical treatment.

2. Skin will be sensitive

People with sensitive skin may experience redness, stinging, burning, etc. on their faces after applying hyaluronic acid, but these phenomena are short-lived and will disappear automatically.

3. Wrinkles

Hyaluronic acid does have a skin care effect, but if used too much, the hyaluronic acid content in the skin will be excessive, which will cause wrinkles. However, the body can eliminate excess hyaluronic acid, which takes a certain amount of time.

4. The moisturizing effect will be reduced

Hyaluronic acid can provide hyaluronic acid, which can provide moisture to the skin. The ingredients of expired hyaluronic acid have changed, and its skin care effect will be reduced.

Will unopened hyaluronic acid expire?

Unopened hyaluronic acid will expire if stored for a long time. Although expired hyaluronic acid has little side effects, its moisturizing and skin care effects will be reduced.

The shelf life of unopened hyaluronic acid is three years. Once opened, the shelf life will be reduced to only three months. Once sediment appears in the hyaluronic acid or it turns yellow, it means that the hyaluronic acid has deteriorated and cannot be used on the face.

Hyaluronic acid cannot be placed in a high temperature environment, let alone exposed to direct sunlight. In direct sunlight and high temperature environments, hyaluronic acid will deteriorate very quickly.

Although expired hyaluronic acid will not have many side effects when used on the face, its effect is weakened compared to the previous effect and it is no longer suitable for use. Unopened hyaluronic acid will also expire.