Serums are relatively recent additions to the world of skincare products. Despite the plethora of serums available both online and offline, vitamin C serums have carved out their niche due to their ability to yield rapid results.

Once a novel element that intrigued the skincare community, vitamin C has now become a cornerstone of many skincare regimens. The brightening and anti-aging properties of vitamin C are the reasons for its frequent inclusion in serums.
Yet, its capabilities extend beyond these. It can bolster the skin’s protective barrier, combat damage from pollution and sun exposure, refine skin texture, and rejuvenate a fatigued complexion.
While vitamin C serums are generally safe and gentle enough for all skin types, improper application can compromise their effectiveness.
Here, we outline five common errors people commit when using vitamin C serums. Continue reading to learn about them all.
Table of Contents
1. Timing Matters

Although there is no strict guideline for the timing of vitamin C serum application, mornings are typically optimal. Applying the serum in the morning can amplify its exceptional sun protection properties when combined with broad-spectrum sunscreen.
However, prior to venturing outdoors, it’s advisable to wait until the serum has dried, as sunlight can interact with the serum and lead to darkening of the complexion.
2. The Sequence

To maximize the benefits of your skincare routine, adhering to a specific sequence is crucial. For instance, vitamin C serums yield the best results when applied immediately after using a toner.
Dispense a small amount onto your fingertips, gently massage it onto your skin, allow it to absorb for a moment, and then follow with a moisturizer. Seal the routine with sunscreen.
3. Concentration and Formulation

Vitamin C serums are crafted differently from other popular ingredients like retinol and niacinamide. These serums utilize citric extracts, which differ from L-ascorbic acid—the highly effective form of vitamin C capable of addressing a wide range of skin concerns.
Opt for a concentration ranging from 2% to 20% and select a formulation that aligns with your skin type and specific issues.
4. Ingredient Compatibility

When selecting a vitamin C serum, take into account its entire composition. If the serum contains only one active ingredient, you must opt for the appropriate concentration.
Nevertheless, many serums encompass a variety of components that bolster the vitamin C content and provide supplementary benefits.
5. Smart Pairing

Most products complement vitamin C well. However, it’s best to avoid combining it with benzoyl peroxide and retinoids. These combinations can potentially lead to skin irritation, especially on sensitive skin.
Prior to incorporating the serum with other products, perform a patch test to gauge compatibility.
Common Queries About Vitamin C Serums
1. Preventing Post-Serum Tanning

Improper usage of vitamin C serums can render the skin susceptible to tanning. Often, these serums are used in isolation without the application of a moisturizer.
If vitamin C is applied directly to the skin before exposure to the outdoors, it can cause darkening due to oxidation upon contact with oxygen. To prevent undesired tanning, always use a moisturizer, face oil, and sunscreen after applying vitamin C.
2. Incompatible Ingredients

In the pursuit of radiant skin, individuals might be tempted to layer numerous products together for faster results. However, this approach isn’t always effective.
Many individuals inadvertently diminish the effectiveness of their vitamin C serums by using them concurrently with other skincare products or treatments that counteract or negate their intended effects.
Retinol, alpha hydroxy acids, beta hydroxy acids, benzoyl peroxide, and niacinamide are five substances that should not be combined with vitamin C serums. Prior research is crucial to determine compatibility between your vitamin C serum and other products.
3. Storage Guidelines for Vitamin C Serums

While each beauty product comes with storage and expiration instructions, these guidelines are often overlooked. Vitamin C serums should be used within three months of opening or by the expiration date indicated on the packaging.
Store the serum away from direct sunlight and minimize exposure to air and moisture. Before each use, ensure that the serum does not emit any unusual odors. Additionally, ensure the lid is tightly secured after each use to minimize air exposure.
Irrespective of the skincare product’s origin, it consists of a blend of chemicals and should be employed as intended. Deviating from usage instructions or experimenting with products can be detrimental to your skin’s health.
If uncertain about a product, it’s advisable to conduct a patch test on your wrist before full application.