Patient's Query
Hi doctor,
A week ago, I applied a 10 % vitamin C serum to my face because I have dark spots. Previously, I had been using a lower-concentration vitamin C serum irregularly for about a year, but it stopped showing effects, so I decided to try a higher concentration. I applied the 10 % serum both day and night for four days.
I developed many small bumps that have now turned into tiny dark spots. My skin has become dry and peeling, but that has stopped since I started moisturizing regularly. Additionally, my face has become darker and developed numerous brown spots, resulting in an uneven skin tone.
My question is: Will I be able to regain my skin's condition with no dark spots and a brighter tone? I am currently using a vitamin B12 moisturizer.
Could you suggest any medications or treatments for a speedy recovery and to help restore my skin? Additionally, I typically do not have acne on my nose, but it appears to have developed some now.
Please guide.
Hi,
Welcome to icliniq.com.
I read your query and understand your concern.
Based on your history and symptoms, this episode is most consistent with irritant contact dermatitis and acute disruption of the skin barrier. This condition was likely triggered by the overuse of a higher-strength (10 %) vitamin C serum applied twice daily, which many skin types cannot tolerate.
Excessive exposure to low-pH ascorbic acid can cause micro-inflammation, resulting in tiny papules, dryness, peeling, and subsequent post-inflammatory hyperpigmentation (PIH). This explains why your face appears darker with multiple brown spots and uneven tone.
It is important to note that this does not represent permanent damage. In the vast majority of cases, the skin barrier can fully regenerate with appropriate care.
The correct approach at this stage is to completely stop using all active ingredients, including vitamin C, acids, retinoids, and exfoliants. Instead, focus on barrier-repair moisturizers, preferably ceramide-based, rather than heavily fragranced lotions.
Additionally, it is crucial to use a strict daily broad-spectrum sunscreen with an SPF (sun protection factor) of 50 or higher, as UV (ultraviolet) exposure can worsen PIH.
A short course (four to seven days) of a bland barrier-repair cream containing ceramides, panthenol, or madecassoside should be sufficient. Once your skin feels normal again, usually within three to four weeks, you can gradually address pigmentation with low-strength niacinamide or azelaic acid, introducing these products slowly.
With patience and proper sun protection, your skin tone can return close to its baseline, and pigmentation should fade over six to 12 weeks.
The persistent roughness on your nose is likely due to sebaceous filaments rather than acne, and it does not require aggressive treatment.
I hope this information helps address your concerns. Please provide your valuable feedback to help improve my patient care.
Thank you.
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Answered byDr. Nancy
Medically reviewed byiCliniq medical review team
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