If you do have a reaction to the vitamin C, don’t use it as part of your daily skincare routine and mention it to your doctor or dermatologist. If you also use AHAs and BHAs, such as glycolic, salicylic, or lactic acids, wait a few minutes before applying the vitamin C serum or you’ll risk irritating your skin.

Use a cleanser that’s designed for your skin type. For example, if you have sensitive skin, use a fragrance-free cleanser that doesn’t contain alcohol. You can find an exfoliating cleansing scrum online here.

If you have oily skin and use a toner that contains benzoyl peroxide, wait at least 5 minutes before using the serum. Mixing the benzoyl peroxide with vitamin C could prevent the serum from working effectively.

You can find Vitamin C serum online for purchase here and here.

If you’re doing the facial in the morning, consider using a daytime moisturizer that contains SPF to protect your skin.

For severe facial acne, talk with your dermatologist about microneedling with vitamin C.

The vitamins help your skin repair itself from sun exposure, which is why you should apply it after being exposed to UV rays.

You’ll need to use the vitamin C for at least a few months before you can expect to see an improvement in your skin’s appearance.

Keep in mind that you’ll need to use the serum for at least 3 or 4 months before you might notice an improvement.