216 reviews
Updated July 2026 · about a 6 minute read
Post acne skin wants calm, even support, not another harsh active.
The short answer
As a gentle cosmetic, PDRN can help support the look of post acne marks and uneven texture over time, especially the red and brown marks left after breakouts. It will not fill deep scars, those need a professional. Here is the honest guide. Browse PDRN serums.
If you have dealt with acne, the breakouts are only half the battle, it is what they leave behind that lingers: redness for months, uneven texture, shallow dips that catch the light. You have probably tried vitamin C, retinol, niacinamide, maybe acids. Now you are hearing about PDRN. So can salmon DNA actually help? Let us be honest about what is realistic.
First, which type of acne mark are we talking about?
Not all post acne marks are the same, and that matters:
Post inflammatory hyperpigmentation (PIH). Flat red or brown marks left after a breakout heals. They are not true scars, they are discolouration that fades over time (sometimes 6 to 12 months). The most common type, especially on deeper skin tones.
Atrophic scars. The indented ones, ice pick (narrow, deep), boxcar (wider, defined edges) and rolling (broad, shallow dips). They happen when the skin does not rebuild enough structure during healing.
Hypertrophic or keloid scars. Raised scars from over healing, less common on the face.
PDRN is most relevant, cosmetically, for the look of the first two, particularly PIH.
What is PDRN, and how does it fit?
If you have read our complete guide to PDRN, you will know the basics: it is a gentle, biocompatible ingredient from salmon DNA. As a gentle cosmetic, it is valued for supporting the appearance of hydrated, calm, even looking skin, which is exactly the kind of support post acne skin tends to want. (An honest note: PDRN is a cosmetic; it does not treat or cure acne or scarring, and we cannot claim it does.)
A word on research: most of the impressive PDRN scar studies involve injectable PDRN given by clinicians, a different category to a serum you use at home. At home cosmetic results are gentler and about appearance, so calibrate expectations accordingly. For context: The Science of Salmon DNA.
How to use PDRN for post acne skin
For the look of red and brown marks (PIH)
This is where a gentle PDRN routine is loveliest, it supports the look of calm, even skin while those marks fade naturally.
Morning: cleanse, one VITARAN capsule on damp skin, vitamin C if you use it, moisturise, then SPF. Sun protection is non negotiable, UV darkens marks and undoes progress.
Evening: cleanse, PDRN serum, moisturise. Using retinol (which is excellent for PIH)? Layer PDRN after it absorbs, full protocol: PDRN and retinol layering guide.
For the look of mild texture and shallow rolling scars
Pairing PDRN with a gentle at home skin tool (a roller, stamp or pen at 0.25 to 0.5mm) helps the serum absorb and supports the look of smoother texture over time. No tool? Consistent daily application still helps the look of texture, see using PDRN without a skin tool. Afterwards: aftercare guide.
For deeper scars (ice pick, deep boxcar)
Being real with you: PDRN will not fill deep scars. These extend deep into the skin, and meaningful change usually needs professional treatments (subcision, fractional laser, and so on) from a qualified clinician. A gentle PDRN serum can be a nice supportive part of your routine before and after professional treatments, follow your clinician’s advice.
The gentlest active you can add to a post acne routine, it plays well with everything and will not cause breakouts.
Why PDRN suits acne prone skin
“I still break out sometimes, will PDRN make it worse?” No. PDRN is lightweight, non comedogenic and free of the oils and rich emollients that can trigger breakouts. It is also biocompatible and one of the gentlest actives you can use, ideal when you are still managing the odd breakout.
A complete post acne routine
Retinol (the most evidence backed option for the look of acne scars), PDRN complements it by supporting comfort between applications. Vitamin C (AM) for brightness, layered over PDRN. PDRN serum (AM/PM) as your gentle daily workhorse. SPF 50+ every morning, the single biggest factor in how fast marks fade. A gentle skin tool (optional) to help PDRN absorb, see our skin tool serum guide. For climate appropriate SPF and layering: Australian skincare routine guide.
How long before you see a difference?
PIH marks: the look often softens over 4 to 6 weeks, with more noticeable fading by three months (deeper pigmentation can take six). Mild texture: subtle improvement in the look of smoothness over a few months, it is gradual. Deep scars: a serum alone will not do much; combined with professional treatments, expect their timeline. Consistency is everything.
Where to start
New to PDRN for post acne skin? VITARAN is a great starting point, a concentrated PDRN formula in single use capsules. For pairing with a skin tool, the CureNex range is designed for that. Both ship Australia wide from the Gold Coast.
CureNex Salmon DNA Daily Serum
A gentle everyday PDRN and peptide serum for the look of calm, even skin. On its own or with your at home skin tool.
$49.50 AUDAfterpay available · free shipping over $150Shop PDRN serums →
The takeaway
PDRN will not erase deep acne scars, nothing you apply at home will. But for the look of red marks, uneven texture and shallow roughness, it is one of the gentlest, most pleasant ingredients to add to a post acne routine. It plays well with everything, will not cause breakouts, and gives your skin steady, consistent support. Combined with retinol, sunscreen and patience, that is often exactly what post acne skin wants. For deeper scarring, see a qualified dermatologist.
Frequently asked questions
Can PDRN help acne scars?
As a gentle cosmetic, PDRN can support the look of post acne marks and uneven texture, especially red and brown PIH marks. It will not fill deep scars, which need professional treatment.
Will PDRN cause breakouts on acne prone skin?
No, PDRN is lightweight, non comedogenic and gentle, making it well suited to acne prone skin that is still managing the occasional breakout.
How long until post acne marks look better with PDRN?
The look of PIH marks often softens over 4 to 6 weeks with consistent daily use and diligent SPF, with more noticeable fading by around three months.
Disclaimer: these are cosmetics, not therapeutic goods, and are not intended to diagnose, treat, cure or prevent any disease or condition, including acne or scarring. For treatment of acne scarring, consult a qualified dermatologist. An at home skin tool should be used gently (0.25 to 0.5mm). Not suitable for those with fish allergies.
