When considering applying Aczee Serum overnight, it's important to understand its ingredients and intended use. Aczee Serum typically contains active components like azelaic acid, which helps with acne and pigmentation.

• Overnight use: Many users apply it overnight to allow the serum to work effectively while the skin is at rest.
• Skin sensitivity: If you have sensitive skin, start by applying it for shorter durations to see how your skin reacts before using it overnight.
• Patch test: Always do a patch test on a small skin area to check for any adverse reactions.
• Moisturizing: Since active ingredients can sometimes cause dryness, follow up with a gentle moisturizer.

If you experience irritation, redness, or excessive dryness, discontinue use and consult a dermatologist. Overall, applying Aczee Serum overnight is generally acceptable, but individual skin tolerance varies.