The "Morning C and Late A" that is being enthusiastically recommended by the entire Internet, can it really whiten and fight aging?

The "morning C and night A" skin care method has become very popular recently, and many people have mentioned it even in our fan group and comment section.

Although this skin care method is popular, it is not suitable for everyone.

In order to answer your questions (not because of the assignment from the boss), we will give you a detailed introduction to "Morning C and Late A" today. For those who are still considering it, it's not too late to decide after reading this article~

1. What is Morning C and Night A? A certain platform calls "Morning C and Night A" a universal "skin care formula".

Based on the literal meaning, it can be simply and roughly interpreted as: use skin care products with VC ingredients in the morning and use skin care products with VA ingredients in the evening.

In fact, "C in the morning and A at night" should be a skin care concept: it means that you can choose "anti-oxidant" products for whitening during the day, and "anti-aging" products for repair at night.

Therefore, "C in the morning and A in the evening" is not a "fixed combination" of certain products, nor is it a "master key" for skin care, but a personal choice made based on one's own skin condition and needs.

Simply put, if your skin can tolerate it, sisters who want whitening can use VC products in the morning, sisters who want anti-aging and repair can use VA products at night.

In order to help you better understand this concept, let's talk about what "early C" and "late A" are.

2. What is early C? During the day, the ultraviolet rays in the sun shine on the surface of the skin, producing a large number of free radicals, which not only make our skin darker, but also cause photoaging. Free radicals are like a dragon, they will rob electrons from our healthy cells, which is what we often call "oxidation reaction."

The antioxidants in skin care products are like the black knight. They stand in front of the cells and selflessly donate their electrons to free radicals, thus preventing them from continuing to do evil.

Among all antioxidant ingredients, VC and its derivatives are relatively active and are widely used.

VC, also known as ascorbic acid, is the antioxidant vitamin with the highest content in the skin. It can be directly absorbed and utilized by skin cells, and has the effects of anti-oxidation, anti-aging, even skin tone and light damage protection.

But while it is powerful, it also has its own shortcomings. First, as a powerful antioxidant, it is very easy to be oxidized and become ineffective when exposed to air, sunlight, high temperature, etc., especially in an aqueous solution system (the formula does not contain oil).

Therefore, major brands are using more stable and easier to configure VC derivatives, such as ascorbyl glucoside in Clinique's "Laser Bottle" and ethyl VC in Kiehl's "White Bottle"...

Second, as a water-soluble ingredient, its skin permeability is low. Therefore, Rohto CC Essence made the prototype VC product into a water-free system, improving product stability while increasing skin permeability.

3. Night A After a whole day of wind, sun, rain and snow (not), after the age of 25, we must seize the evening, this golden period for restoring skin vitality, and carry out "anti-aging" skin care.

Vitamin A, as a "star" anti-aging ingredient, has become the first choice for many people. VA here refers to a class of compounds with retinol biological activity, including retinol (A alcohol), retinyl esters (A esters), retinal (A aldehyde), retinoic acid (A acid), hydroxypinacolone retinoic acid ester (HPR)...

Clinical trials have shown that VA can thicken the epidermis, thereby increasing the production of elastin and fibrin and repairing the skin.

In simple terms, it can be understood that the skin's "fortifications" are in place, and the inside naturally has a chance to recuperate. After a good rest, everyone works together and naturally becomes smooth and elastic.

But then again, while VA is very effective, its side effects are also obvious: stinging, redness, swelling, itching, peeling, acne...everything is possible.

In addition, VA is "photosensitive" in sunlight, which means that it is easily decomposed in sunlight and produces harmful substances, so it needs to be used at night.

4. How should we choose from a variety of products? According to the concentration of VC and VA in the products and the trial experience, we divide the products into entry-level, advanced and high-end for your reference and selection.

Entry level (reference concentration: VC≤10%: VA≤0.1%)

Advanced (reference concentration: VC≤15%: VA≤0.5%)

High grade (reference concentration: VC ≥ 15%: VA ≥ 0.5%)

Finally, as usual, we have summarized the precautions for the "morning C and evening A" skin care concept. Sisters who copied our homework, come and save it!

References[1]HuaMing AN. Advances in research on function, biosynthesis and metabolism of ascorbic acid in higher plants[J]. Chinese Bulletin of Botany, 2004, 21(5):608-617. [2] Pullar JM, Carr AC, Vissers M. The Roles of Vitamin C in Skin Health[J]. Nutrients, 2017, 9(8):866. [3] Serri R, Iorizzo M. Cosmeceuticals: focus on topical retinoids in photoaging[J]. Clinics in Dermatology, 2008, 26(6):633-635. [4] Torras H. Retinoids in aging[J]. Clinics in Dermatology, 1996, 14(2):207-215. [5] Shao, Y., He, T., Fisher, GJ, Voorhees, JJ, & Quan, T. (2016). Molecular basis of retinol anti-ageing properties in naturally aged human skin in vivo. International Journal of Cosmetic Science, 39(1), 56–65.