Laser Spot Removal: Color Changes and Vitamin C Concerns - Dermatology

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When it comes to laser spot removal and the subsequent changes in skin color, it is not uncommon for patients to experience some degree of pigmentation changes following the procedure. The appearance of darker spots, such as the "café au lait" color you described, can occur as a result of post-inflammatory hyperpigmentation (PIH). This is a common response of the skin to trauma, including laser treatments. The skin may react by producing excess melanin in the areas that were treated, leading to darker patches.
In most cases, this pigmentation will gradually fade over time, but the duration can vary significantly from person to person. Factors such as skin type, the depth of the laser treatment, and individual healing responses all play a role in how quickly the skin returns to its normal pigmentation. It is essential to protect the treated areas from sun exposure, as UV rays can exacerbate pigmentation issues and prolong the healing process. Using a broad-spectrum sunscreen with a high SPF is highly recommended.

Regarding the use of L-ascorbic acid (vitamin C) at a concentration of 20%, it is important to note that while vitamin C is a powerful antioxidant that can help brighten the skin and reduce pigmentation, higher concentrations can sometimes lead to irritation, especially for sensitive skin. If your skin has been recently treated with laser, it may be more reactive than usual. Therefore, starting with a lower concentration of vitamin C and gradually increasing it as your skin tolerates it might be a safer approach.
As for the quality of vitamin C products, it is crucial to choose formulations that are stable and effective. Look for products that are packaged in opaque containers to protect the vitamin C from light and air, which can degrade its potency. Brands that are well-regarded in the skincare community often include those that have undergone clinical testing and have positive reviews from dermatologists. However, individual responses can vary, so it may take some experimentation to find a product that works well for your skin.

In summary, the color changes you are experiencing post-laser treatment are likely a normal response, but it's essential to monitor them and consult with your dermatologist if they persist or worsen. Regarding vitamin C, starting with a lower concentration may be wise, especially after a laser treatment, to minimize the risk of irritation. Always prioritize sun protection and consider consulting with a skincare professional for personalized recommendations tailored to your skin's needs.