1, sun protection is one step ahead.

Photoaging is the culprit of skin aging. Whether using vitamin C or vitamin A, sunscreen must be done! High concentration of vitamin has low pH value, which will reduce the protective function of skin after use. It is recommended to use vitamin C for sun protection.

2. Pay attention to stimulation.

The concentration of vitamin C for external use is generally divided into 10%, 15% and 20%. With the increase of concentration, the efficacy will be gradually strengthened, and the acceptance of "concentration" by different skin types is different. High concentrations of vitamin c are also very stimulating. When using vitamin C, we should first choose low-concentration vitamin C products, and gradually establish tolerance, and then use high-concentration VC products.

Early C and late A are suitable for people:

The skin barrier is intact, but it is accompanied by photoaging phenomena such as dry fine lines, coarse pores and dull skin color. Can meet the needs of users for "light damage resistance" and "repair after sun exposure".

Precautions for early C and late A:

1, strict sun protection

Both VC and VA components are sensitive to ultraviolet rays. Especially the A alcohol skin care products used for skin care at night, even if the facial skin is cleaned the next morning, you must do a good job of sun protection during the day. Ultraviolet rays are likely to stimulate inflammatory factors in the skin in the pre-C and post-A periods, leading to redness and tingling of the skin, and even blackening and peeling.

2, suspend other affect skin care.

Efficacy skin care includes whitening, anti-aging, acidic skin care and so on. In the early stage of using VC and VA products, it is also a critical period for the skin to establish tolerance. VC and VA ingredients may irritate the skin itself. If other effective products are superimposed at this time, especially skincare products that exfoliate, it is easy to cause damage to the skin barrier.

Step 3 do a good job of skin repair

As mentioned above, both VC and alcohol A may cause irritation to the skin barrier, and skin dryness and itching may occur after skin care. For skin care products that match the image of early C and late A, you must use repair cream. It can correct the discomfort of the skin barrier in time, and also relieve the redness and tightness of the skin, so that the morning C and the evening A can proceed smoothly.