IntegratingGood Molecules Niacinamide Seruminvolvesapplying a few drops twice daily (AM/PM) onto clean skin before heavier creams, layering it under makeup, and pairing it well with hydrating ingredients like hyaluronic acid while avoiding strong acids (AHAs/BHAs) or applying Vitamin C (ascorbic acid) separately at night, as niacinamide targets pores, tone, texture, and strengthens the skin barrier for a brighter, balanced complexion.How to Use It

1. Cleanse: Start with clean, damp skin.
2. Apply: Dispense a few drops of the serum.
3. Layer: Gently pat onto your face and neck before moisturizers, oils, or makeup.
4. Frequency: Use morning and night. 

What It Does

• Improves enlarged pores, uneven skin tone, and texture.
• Strengthens the skin's moisture barrier.
• Reduces dullness and promotes radiance.
• Water-based formula layers easily. 

How to Pair It

• With Hyaluronic Acid: Both work well together, apply niacinamide first as it's lighter, then hyaluronic acid.
• With Vitamin C: Apply Niacinamide in the morning and Vitamin C (ascorbic acid) at night to avoid potential irritation from mixing, as suggested by Amazon.eg.
• With Ectoin (GM's 5% Serum): The 5% version combines niacinamide with Ectoin for enhanced barrier support and hydration. 

What to Avoid

• Strong Acids: Avoid using with strong AHAs or BHAs at the same time to prevent redness and flushing, notes Skin Software. 

Key Tip:Always patch test, and if you notice irritation, discontinue use.