Yes, you can use azelaic acid during the day. Azelaic acid is a multifunctional skincare ingredient that offers several benefits for the skin, including reducing inflammation, unclogging pores, and brightening the complexion. It is particularly effective in addressing concerns such as acne, rosacea, and hyperpigmentation.

When using azelaic acid during the day, it is important to follow a few guidelines to ensure maximum efficacy and minimize the risk of any potential side effects. Here are some tips:

1. Sun Protection: Azelaic acid may increase the skin's sensitivity to the sun, so it is crucial to apply a broad-spectrum sunscreen with a high SPF after using azelaic acid. This will help protect your skin from harmful UV rays and prevent further damage.

2. Layering: Azelaic acid can be used in combination with other skincare products. However, it is advisable to apply it after cleansing and toning but before moisturizing and applying sunscreen. This allows the azelaic acid to penetrate the skin effectively without any interference from heavier products.

3. Patch Test: Before incorporating azelaic acid into your daytime skincare routine, it is recommended to perform a patch test. Apply a small amount of the product on a discreet area of your skin and observe for any adverse reactions or irritation. If no negative reactions occur within 24 hours, it is generally safe to use.

4. Consistency: For optimal results, it is important to use azelaic acid consistently. Incorporate it into your daily skincare routine and follow the instructions provided by the product manufacturer or your dermatologist.

Remember, everyone's skin is unique, and what works for one person may not work for another. If you have any concerns or specific skin conditions, it is always best to consult with a dermatologist who can provide personalized advice based on your skin type and individual needs.