I believe that everyone must have heard of "morning C and late A", but actually do not know the meaning of it, today, let Xiaobian explain it for everyone!
What is "Early C"?
C here refers to vitamin C, and vitamin C supplementation every morning can achieve the following effects:
1, whitening: not only can reduce the production of melanin, but also restore the generated melanin.
2, antioxidant: the most abundant antioxidant in the human body is vitamin C, which can neutralize free radicals and protect intracellular structures from oxidative stress.
3. Protect the skin from ultraviolet damage: In addition to protecting the skin from free radical damage caused by ultraviolet rays, vitamin C can also inhibit lipid peroxidation and reduce the transmission of oxidogen sensitive cell signals.
4, anti-aging: vitamin C can promote the growth of collagen, reduce the production of wrinkles.
What is "Late A"?
Here A, referring to vitamin A, vitamin A every night before going to bed, can achieve the following effects:
1. Oil control and acne removal: Vitamin A can promote cell production and accelerate the shedding of keratinocytes, so as to achieve the effect of oil control and acne removal.
2, whitening: can accelerate the metabolism of melanin, inhibit the production of new melanin.
3. Anti-wrinkle and anti-photoaging: promote collagen synthesis, while reducing the destruction of collagen by matrix metalloproteinase.
4. Repair sensitivity: increase the tolerance of the skin and strengthen the barrier of the skin.
Not suitable for people
1, sensitive skin and skin barrier damage girls pay attention, you are not applicable, use will make the skin damage more serious.
2. Pregnant women and pregnant personnel are also not suitable, and excessive tretinoin can cause baby malformations.
3. People who cannot strictly protect against suns, vitamin A has phototoxicity.
4, impatient lazy cancer patients, brush acid need to train tolerance, at least a month to establish a skin adaptation period.
How to train tolerance?
Like niacinamide, the use of vitamin products also needs to establish tolerance in the early stage, can not be too hasty, otherwise it may be rotten!
Caution: If there is an uncomfortable reaction to the skin during use, it is necessary to stop using it in time.
Frequency: Gradually increase from once a week or two or three days, up to once a night.
Short-term contact: Leave the upper face for a short period of time for a few minutes to an hour or two) after washing off, slowly stretching for a long time until it can be used as a normal skin care product.
Order: At the beginning, you can use water, essence, and cream to reduce the penetration of vitamin A and reduce irritation. Gradually adjust the order forward.
Concentration: Start with a low concentration of 1% and gradually increase the concentration after tolerance.
Precautions
1, do not use with acid products at the same time:
If you are brushing acid, give up the morning C and night A first, the combination of acids and early C and late A may cause irritation to be too strong, not only can not protect the skin but may also damage the skin barrier.
2, do not stack similar products:
Do not use the same kind of vitamin C products at the same time, VC, VA itself with some irritation, superimposed similar products will amplify the stimulation, but may hurt the skin.
3. Strict sun protection:
VA and VC react to both light! ( VA photosensitivity, VC is easy to meet light)
Therefore, it is necessary to protect from light, and the end of skin care must also be equipped with sun protection to strengthen protection!