Best serum for acne marks featuring QTWAYS Niacinamide, Kojic Acid & Vitamin B5 Face Serum with dermatologist-recommended ingredients for brighter, clearer skin.

Best Serum for Acne Marks: Dermatologist-Recommended Ingredients That Actually Work

June 29, 2026

Acne may heal within days or weeks, but the marks it leaves behind often remain much longer. These post-acne marks can affect skin tone, confidence, and overall complexion, leading many people to search for the best serum to fade them quickly.

However, choosing a serum isn't as simple as buying the product with the highest concentration of active ingredients or the most online reviews.

The effectiveness of a serum depends on several factors, including:

The type of acne mark you have.
Your skin type.
The ingredients used in the formula.
Whether you still have active acne.
How consistently you use sunscreen and your skincare routine.

Many people also confuse acne marks with acne scars. Acne marks are flat areas of pigmentation or redness that usually improve with topical skincare, while acne scars involve permanent structural changes in the skin and often require professional treatments.

Before choosing a serum, it's important to identify your concern correctly.

If you're unsure about the difference, read our guide on Acne Marks vs Acne Scars.

What Makes a Good Serum for Acne Marks?

A good acne mark serum doesn't rely on a single ingredient.

Instead, it should target the biological processes responsible for post-acne pigmentation while supporting the skin's natural healing process.

An effective serum should ideally:

Help reduce excess melanin production.
Reduce pigment transfer to the skin's surface.
Support the skin barrier.
Maintain skin hydration.
Be suitable for acne-prone skin.
Layer comfortably under sunscreen during the day.

Choosing a well-balanced formulation is often more beneficial than selecting a product based only on ingredient percentage.

Understanding Your Acne Marks Before Choosing a Serum

One of the biggest mistakes people make is treating every post-acne mark the same way.

Different marks develop through different biological processes and may respond better to different ingredients.

Type of Mark	Appearance	Cause	Ingredients Commonly Used
Post-Inflammatory Hyperpigmentation (PIH)	Brown or dark spots	Excess melanin production	Niacinamide, Kojic Acid, Tranexamic Acid, Alpha Arbutin
Post-Inflammatory Erythema (PIE)	Red or pink marks	Damaged blood vessels	Azelaic Acid, Niacinamide, Vitamin C
Acne Scars	Indented or raised skin	Collagen damage	Dermatologist procedures rather than topical serums

If your concern is primarily brown acne marks, ingredients that regulate melanin production are generally the most effective choice.

Best Ingredients for Acne Marks

Rather than searching for the "best brand," focus on ingredients that have been widely studied for post-acne pigmentation.

1. Niacinamide

Niacinamide is one of the most versatile ingredients for acne-prone skin.

It helps reduce pigment transfer from melanocytes to skin cells, strengthens the skin barrier, and regulates excess oil production.

Best for

Post-acne pigmentation
Oily skin
Combination skin
Enlarged pores
Uneven skin tone

Benefits

Helps improve post-inflammatory hyperpigmentation.
Supports barrier repair.
Helps reduce excess sebum.
Suitable for daily use.

If your skin is acne-prone, Niacinamide is often one of the first ingredients dermatologists recommend.

Read more in our guide: Niacinamide for Acne-Prone Skin.

2. Kojic Acid

Kojic Acid is widely recognised for its ability to reduce excess melanin production.

It works by inhibiting tyrosinase, an enzyme involved in pigment formation, making it particularly useful for stubborn brown acne marks.

Best for

Dark acne marks
Uneven skin tone
Post-inflammatory hyperpigmentation

Benefits

Helps reduce excess melanin.
Targets stubborn pigmentation.
Supports a brighter-looking complexion.

Learn more in our complete guide: Kojic Acid for Acne Marks.

3. Vitamin C

Vitamin C is a powerful antioxidant that helps improve overall skin radiance while supporting a more even complexion.

It also helps protect the skin from environmental oxidative stress, making it a valuable addition to a morning skincare routine.

Best for

Mild pigmentation
Dull skin
Uneven skin tone

4. Azelaic Acid

Azelaic Acid is often recommended for people dealing with both acne and post-inflammatory pigmentation.

It helps reduce inflammation while gradually improving the appearance of acne marks.

Best for

Active acne
Red acne marks
Sensitive skin

5. Tranexamic Acid

Tranexamic Acid has become increasingly popular for persistent pigmentation.

It works through a different pathway than Kojic Acid and Niacinamide, making it a useful ingredient for stubborn post-inflammatory hyperpigmentation.

Best for

Deep pigmentation
Persistent acne marks
Uneven skin tone

Which Ingredient Is Best for Your Skin Concern?

Skin Concern	Ingredient
Brown Acne Marks (PIH)	Niacinamide, Kojic Acid, Tranexamic Acid
Red Acne Marks (PIE)	Azelaic Acid, Niacinamide
Active Acne + Marks	Azelaic Acid, Retinoids
Oily Acne-Prone Skin	Niacinamide
Sensitive Skin	Niacinamide, Azelaic Acid

Choosing the right ingredient based on your skin concern is often more effective than choosing the product with the highest concentration or the most marketing claims.

How to Choose the Best Serum for Acne Marks

The best serum isn't necessarily the one with the highest concentration of active ingredients or the most viral reviews. It is the one that matches your skin concern, skin type, and skincare routine.

Before buying a serum, consider these five factors.

1. Identify Your Acne Mark Type

The first step is understanding whether you have pigmentation or acne scars.

If your skin feels smooth and the marks are brown or red, you're most likely dealing with post-acne marks.

If you notice pits, depressions, or raised bumps, topical serums alone are unlikely to deliver significant improvement because acne scars involve collagen damage beneath the skin.

Skin Concern	Recommended Approach
Brown Acne Marks (PIH)	Niacinamide, Kojic Acid, Tranexamic Acid
Red Acne Marks (PIE)	Azelaic Acid, Niacinamide
Acne Scars	Dermatologist consultation and professional treatments

2. Choose a Serum Based on Your Skin Type

Different skin types respond differently to active ingredients.

Oily and Acne-Prone Skin

Look for lightweight, non-greasy formulations containing ingredients such as:

Niacinamide
Kojic Acid
Azelaic Acid

These ingredients help improve post-acne pigmentation without making oily skin feel heavy.

Dry Skin

Dry skin benefits from brightening ingredients combined with barrier-supporting and hydrating ingredients.

Look for formulations containing:

Niacinamide
Vitamin B5
Hyaluronic Acid
Glycerin

Hydration helps reduce irritation and supports the skin's natural repair process.

Combination Skin

Combination skin generally responds well to balanced formulations that combine brightening ingredients with lightweight hydration.

Sensitive Skin

If your skin is easily irritated, introduce one active ingredient at a time and perform a patch test before applying it to your entire face.

Gentler options often include:

Niacinamide
Azelaic Acid
Alpha Arbutin

3. Don't Focus Only on One Ingredient

Many people search specifically for a Niacinamide serum or a Kojic Acid serum.

However, acne marks develop through multiple biological pathways.

For this reason, combination formulations are often preferred over single-ingredient products.

For example:

Ingredient	Primary Role
Niacinamide	Reduces pigment transfer and supports the skin barrier
Kojic Acid	Helps reduce excess melanin production
Vitamin B5	Helps soothe the skin and supports barrier repair
Sodium Hyaluronate	Maintains hydration and improves skin comfort

A serum that combines complementary ingredients can provide a more comprehensive approach to post-acne pigmentation than relying on a single active ingredient.

4. Check the Full Ingredient List

When comparing acne mark serums, don't focus only on the ingredient highlighted on the front of the packaging.

Read the complete ingredient list.

A well-formulated serum should ideally include:

Brightening ingredients.
Barrier-supporting ingredients.
Hydrating ingredients.
Lightweight texture suitable for acne-prone skin.

The overall formulation often matters more than a single active ingredient.

5. Choose a Serum You Can Use Consistently

Consistency is one of the biggest factors affecting results.

Using a well-formulated serum every day for several months is generally more effective than switching products frequently in search of faster results.

Ingredient Comparison

Ingredient	Brown Marks	Red Marks	Active Acne	Oily Skin	Sensitive Skin
Niacinamide	Excellent	Good	Good	Excellent	Excellent
Kojic Acid	Excellent	Limited	Limited	Excellent	Moderate
Vitamin C	Good	Good	Limited	Good	Moderate
Azelaic Acid	Good	Excellent	Excellent	Good	Excellent
Tranexamic Acid	Excellent	Limited	Limited	Good	Good
Retinoids	Good	Limited	Excellent	Good	Moderate

Can One Serum Treat Both Acne and Acne Marks?

In many cases, yes.

Some ingredients not only improve pigmentation but also help support acne-prone skin.

Examples include:

Niacinamide
Azelaic Acid
Retinoids

However, if you have severe active acne along with persistent pigmentation, treating the acne itself should remain the priority. Preventing new breakouts also helps prevent new acne marks from forming.

Choosing a Multi-Ingredient Formula

Instead of relying on a single brightening ingredient, many dermatologists recommend formulations that combine complementary actives.

A combination approach can address multiple pathways involved in post-acne pigmentation while supporting the skin barrier.

The QTWAYS 10% Niacinamide + 1% Kojic Acid Face Serum combines:

10% Niacinamide
1% Kojic Acid
Vitamin B5
Hydrating ingredients that support the skin barrier

This combination is designed to help improve post-acne pigmentation while maintaining skin hydration and making the formula suitable for regular use on acne-prone skin.

Common Mistakes When Using Acne Mark Serums

Even the best serum may not deliver the expected results if it is used incorrectly.

Some of the most common mistakes include:

Skipping sunscreen during the day.
Using too many exfoliating acids together.
Expecting visible improvement within a few days.
Frequently changing serums.
Picking active pimples.
Applying strong active ingredients on an impaired skin barrier.

A simple, consistent routine usually delivers better long-term results than an aggressive routine with multiple active ingredients.

How to Use a Serum for Acne Marks

Using the right serum is only part of the process. Consistent application and a simple skincare routine are equally important for improving post-acne pigmentation.

Morning Routine

Cleanse your face with a gentle cleanser.
Apply your acne mark serum if it is suitable for daytime use.
Follow with a lightweight moisturiser.
Finish with a broad-spectrum sunscreen (SPF 30 or higher).

Sunscreen is essential because UV exposure stimulates melanin production, making existing acne marks darker and slowing the fading process.

Evening Routine

Cleanse your face.
Apply your acne mark serum to dry skin.
Follow with a moisturiser to support the skin barrier.

If you're introducing active ingredients for the first time, begin by using the serum on alternate nights before increasing to daily use as tolerated.

How Long Does It Take for an Acne Mark Serum to Work?

Acne marks fade gradually because your skin needs time to complete its natural renewal cycle.

The exact timeline depends on:

The severity of pigmentation.
Whether the marks are recent or old.
Your skin type.
Consistency of use.
Daily sunscreen application.

Skin Concern	Typical Timeline*
Fresh acne marks	4–8 weeks
Mild post-acne pigmentation	6–12 weeks
Moderate PIH	2–4 months
Stubborn pigmentation	4–6 months
Acne scars	Topical serums alone are usually not sufficient

*Results vary from person to person.

For a detailed explanation, read our guide on How Long Does It Take to Fade Dark Spots?

When a Serum May Not Be Enough

Although serums can significantly improve post-inflammatory pigmentation, they have limitations.

If your concern is:

Deep ice-pick scars
Rolling scars
Boxcar scars
Raised acne scars

Topical skincare alone is unlikely to deliver significant improvement because these conditions involve collagen damage beneath the skin.

Dermatologists may recommend treatments such as:

Microneedling
Fractional laser resurfacing
Subcision
TCA CROSS
Chemical peels (for selected cases)

If you're unsure whether you have acne marks or acne scars, read Acne Marks vs Acne Scars before choosing a treatment.

Frequently Asked Questions

Which serum is best for acne marks?

There isn't a single serum that's best for everyone. The ideal choice depends on your skin type and the type of acne marks you have. Dermatologists commonly recommend ingredients such as Niacinamide, Kojic Acid, Azelaic Acid, Tranexamic Acid, Vitamin C, and Retinoids for post-acne pigmentation.

Which ingredient works best for brown acne marks?

Brown acne marks (Post-Inflammatory Hyperpigmentation) often respond well to ingredients that target excess melanin production, including Niacinamide, Kojic Acid, Tranexamic Acid, and Alpha Arbutin.

Which serum is best for oily acne-prone skin?

Lightweight, non-comedogenic formulations containing ingredients such as Niacinamide and Kojic Acid are generally well suited for oily, acne-prone skin because they help address pigmentation without feeling heavy.

Can one serum remove both acne and acne marks?

Some ingredients, such as Niacinamide, Azelaic Acid, and Retinoids, can support acne-prone skin while also helping improve post-acne pigmentation. However, active acne should be managed alongside pigmentation to reduce the risk of new marks.

Can Niacinamide remove acne marks?

Niacinamide is one of the most researched ingredients for post-inflammatory hyperpigmentation. It helps reduce pigment transfer, supports the skin barrier, and contributes to a more even-looking skin tone.

Does Kojic Acid help fade acne marks?

Yes. Kojic Acid inhibits tyrosinase, the enzyme involved in melanin production, making it particularly effective for brown post-acne marks.

Should I use Vitamin C or Niacinamide?

Both ingredients have different strengths. Vitamin C is a powerful antioxidant that helps brighten the skin, while Niacinamide supports the skin barrier and reduces pigment transfer. They can be used together in a well-planned skincare routine if your skin tolerates them.

Can I use an acne mark serum every day?

Most Niacinamide-based serums are suitable for daily use. If your serum contains stronger active ingredients, introduce it gradually and follow the usage instructions provided by the manufacturer.

Do I need sunscreen while using an acne mark serum?

Yes. Daily sunscreen is one of the most important steps in treating post-acne pigmentation because UV exposure can worsen existing marks and delay visible improvement.

Can a serum remove acne scars?

Topical serums can improve pigmentation and overall skin quality, but they cannot rebuild lost collagen or completely remove deep acne scars. Professional dermatological treatments are generally required for textural scars.

Key Takeaways

Skin Concern	Recommended Ingredients
Brown Acne Marks (PIH)	Niacinamide, Kojic Acid, Tranexamic Acid, Alpha Arbutin
Red Acne Marks (PIE)	Azelaic Acid, Niacinamide, Vitamin C
Active Acne + Marks	Azelaic Acid, Retinoids, Niacinamide
Oily Acne-Prone Skin	Niacinamide, Kojic Acid
Sensitive Skin	Niacinamide, Azelaic Acid, Alpha Arbutin

Conclusion

Choosing the best serum for acne marks starts with understanding your skin rather than following trends or marketing claims.

Brown acne marks, red post-acne marks, and acne scars develop through different biological processes, so the most effective serum is one that matches your specific concern. Ingredients such as Niacinamide, Kojic Acid, Azelaic Acid, Vitamin C, Tranexamic Acid, and Retinoids have all been widely studied for their role in improving post-acne pigmentation, but the right choice depends on your skin type, the type of mark, and the overall formulation.

Instead of looking for a serum built around a single active ingredient, consider formulations that combine pigment-correcting ingredients with barrier-supporting and hydrating actives. This approach can help improve post-acne pigmentation while maintaining skin comfort during long-term use.

The QTWAYS 10% Niacinamide + 1% Kojic Acid Face Serum combines 10% Niacinamide, 1% Kojic Acid, Vitamin B5, and hydrating ingredients in a lightweight formula designed for acne-prone skin. It is formulated to help improve post-acne pigmentation, support the skin barrier, and promote a more even-looking complexion with consistent use alongside daily sunscreen.