When considering the use of Anua 10% Niacinamide and 4% TXA serum together with Requil oil-free moisturizer, it's important to understand how these products interact and their effects on your skin.

• Niacinamide (10%) is a well-tolerated ingredient known for reducing inflammation, improving skin barrier function, and evening out skin tone.
• TXA (Tranexamic Acid, 4%) is used to reduce pigmentation and brighten the skin.
• Requil oil-free moisturizer is designed to hydrate the skin without adding excess oil, suitable for oily or acne-prone skin.

Generally, these products can be used together safely as they complement each other: the serum targets pigmentation and skin tone, while the moisturizer hydrates without clogging pores.

Tips for use:

• Apply the serum first on clean skin.
• Follow with the Requil oil-free moisturizer to lock in hydration.
• Always do a patch test before starting new products to check for any sensitivity.
• Use sunscreen during the day, as TXA and niacinamide can make your skin more sensitive to sunlight.

If you have sensitive skin or any skin conditions, consulting a dermatologist before combining these products is advisable to ensure they suit your skin type and needs.