Should vitamin C serum be used in the morning or evening?
von Katharina Marin
06 November 2025
Vitamin C is one of the most effective active ingredients in modern skincare. It promotes a fresh complexion, supports collagen production, and protects against free radicals. But when does a vitamin C serum work best – in the morning or in the evening? In this article, you'll learn how the newkee vitamin C 15% booster serum works, why the timing of application matters, and how to get the most out of this active ingredient.
Why Vitamin C is a skincare classic
As a powerful antioxidant, it protects cells from oxidative stress caused by UV radiation, particulate matter, or other environmental factors. At the same time, it evens out skin tone and stimulates the production of collagen – the protein that gives skin its elasticity and firmness.
With increasing age, or due to stress, an unhealthy diet, or excessive sun exposure, the body's own collagen production can decrease. The skin appears tired, uneven, or loses elasticity. A high-dose serum like the Vitamin C 15% Booster Serum can help by stimulating regeneration and visibly brightening the complexion.
What's special about the vitamin C 15% booster serum
The serum contains 15 percent vitamin C in three stable derivatives. This combination makes it particularly effective and, at the same time, well-tolerated – even by sensitive skin. The formula is complemented by ferulic acid, which enhances the antioxidant effect and stabilizes the vitamin C.
The texture is creamy and light, absorbs quickly, and leaves no residue on the skin. The pump dispenser allows for precise dosage, hygienic application, and even distribution of the serum. It is fragrance-free, vegan, dermatologically tested, and awarded the HypoSense® seal – a sign of excellent tolerability.
Morning – Protection against free radicals
Morning application is particularly suitable if you want to protect your skin from daily stressors. During the day, it is exposed to UV radiation, fine dust, and temperature fluctuations. These influences promote the formation of free radicals, which can attack skin cells and accelerate the aging process.
Vitamin C acts as a natural protective layer. It neutralizes free radicals before they can cause damage and simultaneously strengthens the skin barrier. The result is an even, fresh complexion that remains more resilient throughout the day.
Use in the morning
After cleansing, apply a small amount of the vitamin C 15% booster serum to your face , neck, and décolleté and gently massage it in. Allow it to absorb briefly, then apply a moisturizer. For daytime use, it is recommended to also apply sunscreen to complement the antioxidant effect.
Evening – Supporting skin regeneration
In the evening, the skin regenerates more intensively than at any other time of day. During this phase, cells are renewed, damaged structures are repaired, and stored active ingredients are better utilized. A vitamin C serum can support this process by accompanying the skin's renewal and visibly reducing pigmentation irregularities.
Regular evening application can lead to a more even complexion. Vitamin C helps to lighten dark spots caused by sun exposure or skin stress and to balance the overall appearance.
Use in the evening
Apply the serum to dry skin after cleansing, leave it on briefly, and then use a nourishing night cream. This allows the skin to optimally absorb the active ingredients while it regenerates overnight.
Morning or evening – when is better?
Whether you use the serum in the morning or evening depends on your skin type and your skincare goal.
Morning:
Ideal if you want to protect your skin from external influences. Vitamin C acts like a protective shield and gives the complexion a fresh and radiant glow.
At evening:
Perfect if you want to reduce age spots or improve skin texture. It specifically supports the skin's regeneration phase.
Many skincare experts recommend applying vitamin C in the morning, as its antioxidant effects are most pronounced when combined with sunscreen . However, those with sensitive skin or who use other active ingredients like retinol can just as easily incorporate it into their evening routine.
Tips for optimal use
Always apply the serum to cleansed, dry skin.
– Always use sunscreen in the morning after applying the serum.
– If you are using multiple active ingredients, it is best to use vitamin C separately from strong acids or retinol.
– With regular use, one to two pumps per day are usually sufficient.
– Store away from light to ensure the active ingredients remain stable.
Conclusion – Vitamin C as a daily skin booster
Newkee's Vitamin C 15% Booster Serum uses concentrated Vitamin C to visibly revitalize, protect, and strengthen the skin. It's suitable for both day and night use – whether you want to protect your skin from external aggressors or promote its regeneration.
No matter when you choose to use it: Regular use will help your skin become smoother, more resilient, and more radiant. A true all-rounder for anyone who wants a clear, fresh complexion – without a complicated routine.