vitamin c darken skin
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What Causes Vitamin C to Darken our Skin

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Update time : 2019-10-10 16:33:47
In fact, this will happen to many people, which is also a side effect of vitamin C whitening and anti-aging.
 
But does skin color change really hurt your skin? Is there a way to stop this from happening?
 
Hydroxy acid lactic acid has been shown to enhance the sensitivity of light, and all products using these ingredients need to be protected from light in the future.
 
But the vitamin C ingredient is a safe ingredient that can be used all year round! In this article, I will answer:
 
1  When you are exposed to UV rays, why is vitamin C actually beneficial?
 
2  What causes vitamin C essence to darken the skin and how to prevent it?
 
3  What vitamin C essences are worth trying (and how to use them) to avoid skin blackening
 
 
 
How Vitamin C Protects our Skin
 
To tell the truth, the summer when our skin can expose the most ultraviolet rays is the best time to use vitamin C.
 
Free radicals in summer are the most free (and the most harmful to us), she is an unstable molecule that causes aging by consuming natural antioxidants in the skin and causing damage to cells and DNA.
 
However, vitamin C as an antioxidant can neutralize the oxidative stimuli caused by these free radicals and slow down the skin damage caused by ultraviolet rays. Especially when I saw a medical magazine report that sunscreen is only partially effective in blocking the free radicals produced by ultraviolet radiation. Therefore, I am more dependent on the secondary protection of vitamin C.
 
In addition to this, Vitamin C brightens skin tone, diminishes pigmentation, and (at least uses L-ascorbic acid) promotes collagen production! Anyway, if you want your skin to be good, you can't do it.
 
Since she is so powerful, then the problem is coming:
 
 
 
What Causes Vitamin C to Darken our Skin
 
In fact, the so-called vitamin C makes the skin black because she has an oxidation reaction, perhaps on the surface of our skin, or in the bottle (although it feels common sense, it still needs to be mentioned)
 
About oxidation in the bottle:
 
When your vitamin C turns brown, it means that it has been exposed to light, heat, air and then oxidized, and lost all the effects we said above (for vitamin C containing L-ascorbic acid, it is usually three after opening the bottle) It will oxidize around the month),
 
So what does dimension C become after oxidation? The original energetic vitamin C is degraded into erythrose. This is a common leather ingredient, usually tan, which can stay in the skin for a week or so.
 
In addition to the ugly color, this erythritol may age our skin. So everyone will use it as soon as possible after opening the bottle.
 
About oxidation on the skin:
 
Use fresh, non-oxidized vitamin C (liquid texture is transparent, and fluidity is good) on the face. If you apply it at night, you will see a change in the skin color on the face the next morning. This is a normal oxidation phenomenon.
 
 
 
How to Stop Vitamin C from Darkening our Skin
 
So how do we stop vitamin C from darkening the skin?
 
1️. Prevent your L-ascorbic acid serum oxidation
 
Vitamin C extract containing L-ascorbic acid is the most effective form of vitamin C but the imperfection is that it is very unstable.
 
If you can find both ferulic acid and vitamin E, it can help the vitamin C to be more stable. It also doubles the photoprotection of Vitamin C.
 
My own Paula's Choice C15 Super Booster has both ingredients.
 
The product containing this ingredient needs to be used up within three months, and it is a good idea to keep it away from the sun and high temperature. It is a good idea to put it in the refrigerator. If the color is changed, it should be thrown away immediately.
 
2. Change to vitamin C derivatives
 
Vitamin C derivatives are good substitutes for L-ascorbic acid because they are more stable and more resistant to oxidation, so they are less prone to degrade their non-acidic pH and are therefore tend to be milder.
 
Their names are generally long:
 
Magnesium ascorbyl phosphate magnesium ascorbate (MAP)
 
Sodium ascorbyl phosphate sodium ascorbyl phosphate (SAP)
 
Ascorbyl glucoside ascorbate glucoside
 
Ethyl ascorbic acid
 
Ascorbyl tetraisopalmitate ascorbyl tetraisopalmitate
 
Although vitamin C derivatives are very effective against free radicals and brightening, the deficiency is that they increase skin collagen, which is less than L-ascorbic acid.
 
3. ️ Try powdered L-ascorbic acid
 
If the first two are too cumbersome and you are not too stable, consider solid (powdered). Powdered L-ascorbic acid is much more stable than its liquid texture and is less likely to degrade oxidation. The method used is also very convenient. Add a little powder when applying the essence or lotion, then apply it on your face.
 
Another small reminder: Vitamin C has the best permeability at low (acidic) pH, but the risk of skin irritation also increases. In order to be safe, try to control the pH of the mixture of powder and other essences between 3.0 and 3.5. (You may need a PH test strip)
 
4.  Vitamin C essence is used together with essential oils
 
Our article today is to solve the problem of vitamin C oxidizing the skin. Then vitamin C is exposed to light, air, and relatively high temperatures before it is oxidized. Then, after applying vitamin C, then apply a thick layer of essential oil on the face to isolate vitamin C from contact with air. It is best to choose a thick grease that will not be absorbed by the face. Pure coconut oil and jojoba oil are good choices.
 
5.  Nights in the use of vitamin C essence
 
If your habit is to use in the morning, then you can try to switch to night use. It is helpful to go out to fight free radicals the next day, but you don't have to expose your skin to strong light.
 
6. ️ Insist on exfoliating every day
 
If you have tried the above methods, but the problem of vitamin C oxidizing the skin has not been resolved, then it is time to consider exfoliation. This is also an important step in my daily skin care process. I can exfoliate as much as possible every day. On the one hand, removing hydroxy acid exfoliation every day can not only remove dead skin cells stained with erythrose, but also help the skin absorb nutrients.