Can You Use Glycolic Acid With Niacinamide?

Combining active ingredients in skincare can sometimes seem daunting, but when done right, it can deliver remarkable results. One of the most effective duos is glycolic acid and niacinamide. While glycolic acid exfoliates dead skin cells and promotes cell turnover, niacinamide soothes, strengthens the skin barrier, and improves overall texture. Together, they tackle multiple concerns, dullness, uneven tone, fine lines, and congestion, making your skincare routine more efficient and results-driven.

March 09, 2026

What is Glycolic Acid

Glycolic acid is a powerful exfoliating ingredient that removes dead skin cells to reveal smoother, brighter skin.

Benefits of Glycolic Acid

  • Exfoliates: Smooths skin.
  • Brightens: Boosts radiance.
  • Controls Acne: Clears pores.
  • Anti-Ageing: Reduces fine lines.
  • Even Tone: Fades dark spots.
  • Refines Texture: Smooths roughness.

Who Should Use Glycolic Acid

Best for brightening, anti-ageing, and smoother skin.

What is Niacinamide

Niacinamide strengthens the skin barrier and evens skin tone

Benefits of Niacinamide

  • Improves Barrier: Protects skin and locks in moisture.
  • Controls Oil: Balances sebum for less shine.
  • Minimises Pores: Refines the appearance of pores.
  • Evens Tone: Reduces dark spots and discolouration.
  • Soothes Skin: Calms redness and irritation.

Who Should Use Niacinamide

Ideal for all skin types to improve tone, texture, and barrier health.

Can You Use Them Together

Yes, glycolic acid and niacinamide can be safely used together for brighter, smoother skin.\

How to Combine the Two in Your Routine

  • Cleanse: Use a gentle cleanser like L'Oréal Paris Glycolic Acid Foaming Facial Cleanser.
  • Apply Glycolic Acid: Use 2–3 times a week in the evening.
  • Wait: Allow 5–10 minutes for absorption.
  • Apply Niacinamide: Follow with a niacinamide serum or moisturiser.
  • Moisturise: Seal in hydration with a gentle moisturiser.
  • Sun Protection: Apply UV Defender Serum Protector the next morning.

Who Should Use this Combo?

Perfect for all skin types looking to brighten, smooth, and strengthen their skin.

Tips for using these ingredients together

  • Layering: Apply glycolic acid first, then niacinamide.
  • Hydration: Use a moisturizer to lock in moisture.
  • Sun Protection: Always wear SPF during the day.
  • Start Slow: Introduce actives gradually.

What is Glycolic Acid

Glycolic acid is a type of alpha-hydroxy acid (AHA) derived from sugarcane. It is widely known for its exfoliating properties, helping to remove dead skin cells and promote cell turnover. Glycolic acid penetrates the skin effectively due to its small molecular size, making it ideal for improving texture, tone, and overall radiance.

Benefits of Glycolic Acid

The following are the countless benefits of glycolic acid:

  • Exfoliation: Removes dead skin cells to reveal smoother skin.
  • Brightening: Reduces dullness and improves skin radiance.
  • Fights Acne: Helps unclog pores and prevent breakouts.
  • Reduces Fine Lines: Encourages collagen production for firmer skin.
  • Even Skin Tone: Fades hyperpigmentation and dark spots over time.

Who Should Use Glycolic Acid:

  • People with dull or uneven skin tone.
  • Those with acne-prone skin or clogged pores.
  • Anyone looking to reduce early signs of ageing, like fine lines.

What is Niacinamide

Niacinamide, also known as vitamin B3, is a water-soluble vitamin renowned for its versatility in skincare. It strengthens the skin barrier, regulates oil production, and offers antioxidant benefits, making it suitable for almost every skin type.

Benefits of Niacinamide

  • Improves Skin Barrier: Strengthens skin against irritants and moisture loss.
  • Reduces Oiliness: Balances sebum production for less shine.
  • Minimises Pores: Helps refine the appearance of enlarged pores.
  • Fades Discolouration: Reduces hyperpigmentation and evens skin tone.
  • Calms Inflammation: Helps with redness, sensitivity, and acne-related irritation.

Who Should Use Niacinamide:

  • Sensitive or irritated skin.
  • Combination or oily skin types.
  • Anyone looking to improve skin texture and tone.

Can You Use Them Together?

Using glycolic acid and niacinamide together is both safe and effective when done correctly. While glycolic acid exfoliates and removes dead skin cells, niacinamide strengthens the skin barrier and soothes irritation. Pairing them addresses multiple skin concerns simultaneously: exfoliation, brightness, and barrier support.

If you’ve wondered, ‘can we use glycolic acid and niacinamide together?’, the answer is yes, provided you layer them properly and avoid over-exfoliation or sensitivity issues. Many skincare experts recommend alternating application or using products at different times of the day.

Read our guide on Everything You Need To Know About Glycolic Acid For Skin - Benefits, Usage, How To Use for more insights.

How to Combine the Two in Your Routine

Here’s a step-by-step routine to enjoy the benefits of glycolic acid and niacinamide together:

  1. Cleanse: Start with a gentle cleanser to remove dirt, oil, and makeup.

Recommended Product: L'Oréal Paris Glycolic Acid Foaming Facial Cleanser

  1. Apply Glycolic Acid: Use a glycolic acid serum or toner in the evening 2–3 times a week.
  2. Wait for Absorption: Allow 5-10 minutes for glycolic acid to penetrate.
  3. Apply Niacinamide: Follow with a niacinamide serum or moisturizer to soothe and strengthen the skin.
  4. Moisturise: Seal in hydration with a gentle moisturizer suitable for your skin type.
  5. Sun Protection: Always apply UV Defender Serum Protector the next morning, as glycolic acid can increase sun sensitivity.

Tip: If your skin is sensitive, start by using glycolic acid every other day and niacinamide daily.

Who Should Use this Combo?

Pairing glycolic acid and niacinamide together is beneficial for:

  • Oily & Acne-Prone Skin: Exfoliates clogged pores while controlling oil.
  • Dull Skin: Brightens and improves skin radiance.
  • Uneven Skin Tone & Hyperpigmentation: Reduces dark spots and smooths texture.
  • Early Signs of Ageing: Combats fine lines while strengthening the skin barrier.
  • Sensitive Skin: Niacinamide calms irritation caused by exfoliation.

Tips for using these ingredients together:

  • Always apply glycolic acid first, then wait before layering niacinamide.
  • Use moisturisers to lock in hydration.
  • Always wear SPF during the day.
  • Introduce each ingredient gradually if you’re new to acids or active serums.

Want glowing, even-toned skin without complicated routines? Using glycolic acid and niacinamide together can transform your skincare, tackling concerns from dullness and uneven tone to fine lines and breakouts. By following the right layering and frequency, and incorporating products like the L’Oréal Paris Glycolic Bright range and L’Oréal Paris Skin Genius, you can achieve smoother, brighter, and healthier-looking skin.

Frequently Asked Questions

1. How often should you use glycolic acid and niacinamide together?
For most skin types, use glycolic acid 2-3 times a week and niacinamide daily. Those with sensitive skin types should start slowly to avoid irritation.
2. Can I use glycolic acid and niacinamide together in the morning?
It’s best to use glycolic acid in the evening since it can increase sun sensitivity. Niacinamide can be applied both morning and night. Always follow with SPF during the day.
3. Will using these ingredients together irritate?
When layered correctly, irritation is minimal. Start slowly, patch test first, and always follow with a soothing moisturiser to reduce the risk of redness or dryness.
4. Can I combine them with other active ingredients?
Yes, but with caution. Avoid layering strong acids, retinoids, or vitamin C directly with glycolic acid in the same routine. Niacinamide is generally compatible with most other actives.
5. How long will it take to see results?
Most users notice improvements in texture, brightness, and tone within 4–6 weeks of consistent use. Patience and regularity are key.