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Lactic acid for post-acne marks: how to use it and what to expect

Lactic acid for post-acne marks — what it is, how it works and how to add it to your routine without irritation.

2025-09-29
Articles · 2025-09-29

Let's be honest about what Lactic acid can really do, and what it can't.

What is Lactic acid

Lactic acid is a gentle AHA that exfoliates while also hydrating the skin.

How Lactic acid helps for post-acne marks

Post-acne refers to lingering marks and unevenness left after breakouts. Lactic acid approaches the problem from a different angle: lactic acid is a gentle AHA that exfoliates while also hydrating the skin. As a result, used consistently, it gently improves the skin for post-acne marks.

How to use it

  • Cleanse with a gentle, non-stripping product.
  • Apply lactic acid to dry skin, starting 2–3 times a week.
  • Seal with a moisturiser to support the barrier.
  • Always use SPF 30+ in the morning.

Precautions

An excellent "starter" exfoliant for sensitive and dry skin. Don't pick at breakouts — that's the main cause of marks and scars.

FAQ

How fast does Lactic acid work for post-acne marks?

First changes are usually visible after 4–8 weeks of consistent use; lasting results take 2–3 months.

Can I use Lactic acid every day?

Start 2–3 times a week and build up based on how your skin responds. Don't pick at breakouts — that's the main cause of marks and scars.

Who should be more careful?

An excellent "starter" exfoliant for sensitive and dry skin. If in doubt, consult a cosmetologist or dermatologist.

The DermaShape catalogue offers professional products and treatments matched to this concern.

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