Niacinamide vs Vitamin C: Can You Use Both?

Two of the most popular skincare ingredients right now are Niacinamide (Vitamin B3) and Vitamin C (L-Ascorbic Acid). Both are proven actives with impressive benefits — but can you use them together? Let's settle this debate once and for all.

What Does Niacinamide Do?

Niacinamide is a versatile, well-tolerated ingredient that works for almost every skin type. Here's what it does:

• Controls oil production — perfect for oily and acne-prone skin
• Minimises pores — tightens and refines skin texture
• Brightens skin — inhibits melanin transfer to reduce dark spots
• Strengthens the skin barrier — boosts ceramide production
• Reduces redness and inflammation

What Does Vitamin C Do?

Vitamin C is the gold standard antioxidant in skincare. Its key benefits include:

• Brightens complexion — gives skin a radiant, lit-from-within glow
• Fights free radical damage — protects against pollution and UV
• Boosts collagen production — firms skin and reduces fine lines
• Fades hyperpigmentation — evens out skin tone over time
• Enhances sun protection — works synergistically with SPF

The Old Myth: "They Cancel Each Other Out"

For years, people believed that Niacinamide and Vitamin C shouldn't be used together because they would react and form nicotinic acid, causing flushing and redness. This is outdated science.

The original studies were done at extremely high temperatures (above 70°C) that don't exist on human skin. Modern formulations with stabilised Vitamin C and Niacinamide are perfectly safe to layer together.

Can You Use Niacinamide and Vitamin C Together?

Yes, absolutely! In fact, they complement each other beautifully:

• Vitamin C brightens + Niacinamide controls oil = glowing, balanced skin
• Both fight pigmentation through different mechanisms = faster results
• Niacinamide calms skin + Vitamin C can be irritating = Niacinamide buffers irritation

How to Layer Them

Option 1 (Same Routine): Apply Vitamin C serum first (it's pH-dependent), wait 1-2 minutes, then apply Niacinamide.

Option 2 (Split Routine): Vitamin C in the morning (for antioxidant UV protection) and Niacinamide at night (for oil control and barrier repair).

Our Recommendation

Use the S2C Premium Vitamin C 15% Brightening Serum in the morning followed by SPF, and the S2C Premium Niacinamide 10% Serum at night. This gives your skin the best of both worlds without any irritation.