Vitamin C Serum for Skin: You’re Question Our Answer
                     
Why do we need an antioxidant?
This is the question that comes up very often: "Why apply an 
antioxidant face serum when I have been without it for years?" Our 
skin naturally defends itself against external aggressions by 
intercepting free radicals, responsible for the aging of the skin. But 
its defense capital is not unlimited and often needs help to be 
optimal.
You will tell us that a varied and balanced diet can be enough to 
provide the necessary dose of antioxidants for the skin. 
While our body needs to have a supply of antioxidants through the 
daily consumption of fruits and vegetables, only ⅓ of the 
antioxidants that we ingest go to the skin. This is why a supply of 
topical antioxidants is essential to prevent skin damage and visibly 
correct the signs of aging and hyperpigmentation.
Is vitamin c serum compatible 
with the sun?
You can use vitamin C serum when the sun is shining since 
it can be used all year round, summer and winter. It is also 
essential to apply protection adapted to your skin type at the 
end of your face care routine. 
Indeed, the anti-free radical action of vitamin C complements 
the protective action of protection, increasing its power by 
approximately 30%. 
This is why we advise you to use a sun filter after applying 
your vitamin C serum because these two products combined 
have a real shielding effect on your skin.
Why do we have serum-
containing several 
antioxidants?
It is possible to combine several antioxidants in a single 
serum to provide more complete protection. For example, 
Derma Essentia's Vitamin C Serum is combined with 
hyaluronic acid to provide increased protection against 
free radicals, improve skin firmness, reduce the 
appearance of wrinkles and fine lines and brighten the 
complexion.
This specific combination must of course be clinically 
validated for its effectiveness and synergy to be 
guaranteed because an unoptimized mixture of 
antioxidants can cause instability of the formula or even a 
negative effect.
Can vitamin c serum be 
applied to all skin types?
Yes, it is possible to apply a vitamin C serum to all skin 
types as long as you choose the right serum, of course! 
For example, oily skin will opt for an antioxidant serum 
containing active ingredients that act at the same time 
to reduce excess sebum, such as Derma Essentia's 
Vitamin C Serum. 
Sensitive and dry skin, for its part, will opt for a serum 
that incorporates soothing and lipid-replenishing 
agents, to reconstitute the fat reserves of the 
hydrolipidic film.
Is vitamin c compatible with 
another active ingredient?
Vitamin C complements perfectly with other active 
ingredients, such as Hyaluronic Acid or Niacinamide.
However, avoid incorporating a vitamin C serum in 
facial care routines including AHA / BHA (including the 
famous glycolic acid), salicylic acid, Retinol, copper 
peptides, or even benzoyl peroxide. 
In these cases, the association of vitamin C with these 
assets will either cause irritation and flaking or cancel 
the effects of the assets in question.
Does a highly concentrated vitamin C serum 
systematically cause irritation?
A too high concentration of vitamin C can cause skin irritations such as tightness, 
stinging, and discomfort, especially on sensitive skin. That's why it's important to choose 
the right vitamin C serum for your skin type.
Does vitamin c cause pimples?
A vitamin C serum can be irritating to sensitive and reactive skin but does not cause 
pimples.
How often to apply vitamin c serum on face?
In your daily beauty routine, morning and evening. Be careful because too much is the 
enemy of good. 
In high doses, vitamin C can become pro-oxidant and therefore have the opposite effect 
of what you are looking for. 1 to 2 times a day is, therefore, more than enough.