Mederma Acne Scar Serum, Triple-Action 1 fl oz — Niacinamide, Tetrapeptide-30 & PHA for Redness, Texture & Hydration

Mederma Acne Scar Serum is a concentrated triple-action topical designed to visibly lighten, smooth, and hydrate areas affected by acne scarring when used consistently.

If you want a targeted addition to your skincare routine that focuses on post-acne texture, redness, and dark marks, this 1 fl. oz. serum brings together niacinamide, tetrapeptide-30 and a polyhydroxy acid (PHA) to address multiple scar-related concerns. Formulated to layer easily under moisturizers and sunscreens, the serum is intended for twice-daily use and promises noticeable improvement over several weeks without disrupting most established regimens.

How does this serum tackle different types of acne marks?

The formula combines ingredients that each contribute to improving the visible traits of acne scars. Niacinamide helps even tone and reduce redness, tetrapeptide-30 supports smoother-looking texture, and the PHA gently exfoliates to reveal fresher skin. Together they target discoloration, raised or indented texture, and surface roughness.

• Niacinamide: reduces the look of redness and promotes an even tone.
• Tetrapeptide-30: targets textural irregularities for a smoother appearance.
• Polyhydroxy acid: provides mild exfoliation with hydration-friendly properties.
• Concentrated serum base: delivers active ingredients directly to affected areas.

When will I see visible changes if I start using it?

Results depend on consistent application and individual skin factors, but many users report visible improvement within a few weeks. The product information highlights noticeable changes in as little as four weeks with twice-daily application, and a full eight-week course is recommended for best results.

• Apply twice daily to clean, dry skin for continuous results.
• Expect early improvements in redness and tone within weeks.
• Follow an 8-week routine for more pronounced smoothing and lightening.

How do I add the serum to my existing skincare routine?

This serum is formulated to layer under moisturizers and sunscreens and can be used alongside most active treatments. Apply it after cleansing and any water-based serums, then follow with moisturizer and SPF during the day to protect freshly resurfaced skin.

• Step 1: Cleanse and pat skin dry.
• Step 2: Apply a few drops of serum to scarred areas or the entire face as directed.
• Step 3: Layer your moisturizer and daytime SPF or evening restorative products.

Is this product suitable for sensitive or acne-prone skin?

The formulation uses a PHA, which is typically gentler than stronger acids, and niacinamide which is often tolerated by sensitive or acne-prone skin. As with any active treatment, patch testing is recommended and you should monitor for irritation, especially when combining with other exfoliating ingredients.

• PHA offers mild exfoliation with lower irritation risk than AHAs or BHAs for some users.
• Niacinamide can help calm redness associated with sensitivity or acne.
• If irritation occurs, reduce frequency or consult a skincare professional.

Who is this for: Mederma Acne Scar Serum is aimed at adults seeking a targeted, non-invasive option to improve the look of post-acne marks—whether those are redness, discoloration, or uneven texture. It fits users who want to add a concentrated treatment to an existing regimen without switching multiple products, and those who prefer a product from a widely recommended scar-care brand. If you have active cystic acne, severe skin conditions, or are unsure about ingredient interactions, consult a dermatologist before beginning new topical therapies.