How to Tell If Vitamin C Serum is Bad

Leading dermatologists continue to promote the usage of Vitamin C serums. Ladies, if you want to add a natural glow to your skin while preventing signs of aging, perhaps using Vitamin C serum topical products is for you. While your body does receive Vitamin C naturally through various foods, dermatologists suggest using a topical product to optimize its cosmetic benefits.

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What are the benefits of Vitamin C serum?
Vitamin C is an antioxidant that is recommended by dermatologists to help prevent the damages of UV ray penetration from the sun (i.e: neutralizing free radical damage). According to clinical dermatologist Dr. Anna H. Chacon, Vitamin C serum is a popular skincare product that promotes skin rejuvenation.

“Topical vitamin C or ascorbic acid is a popular vitamin being added to skincare products,” said Chacon. “Currently, there are many advertising claims of a topical formulation containing antioxidants that will protect against and reverse aging.”

Dr. Emmanuel Loucas, Director of SINY in New York and Water’s Edge Dermatology, adds that Vitamin C also aids in the production of collagen to the skin. As a result, Dr. Loucas states that Vitamin C will ultimately help to decrease pigmentation in your skin, which will visibly show results of improvement. While improving any dullness in the skin’s appearance, users will be able to see a youthful glow return to their skin.

Are there any downsides to Vitamin C?

Like with most products, moderation is everything. Vitamin C serum is not harmful to the skin, as long as you don’t overdo applying it. Typically, it is recommended to apply the serum once a day. It is up to you as to what time of day using it best fits into your routine. If you do start to have discomfort or skin irritation, it is best to immediately suspend usage. Everyone’s skin is unique, so you should always consult with your dermatologist before incorporating any new products into your regimen.

Beware of expiration dates. Just like food and makeup, serums can go bad. According to clinical dermatologist Dr. Ailynne Marie Vergara-Wijangco, the shelf life of the serum can be affected by product formulation and packaging. She said it is important to note if the product has a water-free formulation and the bottle should be opaque and airtight.

Dr. Anna H. Chacon, also states that an easy way to see if the product has gone bad is by checking its color and odor.  If the product begins to give off a weird odor or appears tinted brown or yellow, odds are that the serum is expired.  Shelf life only typically lasts for roughly one year—it’s best not to push the use of a product if you sense it has expired.

Vitamin C serums can get very costly. The use of topical serums is the best way to directly incorporate the vitamin into the skin and optimize its benefits. Your best results will boast a glowy and youthful complexion. Because Vitamin C is an antioxidant that promotes collagen, it is proven to be effective in protecting against photoaging of the skin. If you want healthy skin that looks young and radiates from the inside out with a natural glow, Vitamin C is certainly a healthier and non-invasive option. That being said, be mindful of the products you are trying. Do your research and find the serum that works best for you and your skin type. New users should also be mindful of the concentration of the serum they are using (concentration of the antioxidant). If you develop skin irritation, stop using the product immediately and consult with your dermatologist. Start out using smaller amounts and then progressively increase use over time, if desired. The bottom line is that Vitamin C serums are a great product to try to actively combat signs of aging while maintaining and boosting a youthful, glowing complexion.

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Dr. Emmanuel Loucas, Director of SINY in New York and Water’s Edge Dermatology in Boca Raton/Delray Beach/Wellington, FL.
Dr. Ailynne Marie Vergara-Wijangco MD. Dermatologist, Writer at (
Dr. Anna Chacon, Dermatologist, Writer at My Psoriasis Team

Written by Haleigh Couture

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