PIH vs. PIE: Stop Treating Them Like They’re the Same 👀
One of the biggest mistakes I see is people treating PIH and PIE like they’re the exact same thing.
They’re both common after acne, but they happen for completely different reasons, which means they often respond best to different skincare approaches.
🤎 PIH (Post-Inflammatory Hyperpigmentation) is caused by excess melanin production. These marks are usually:
• Brown
• Tan
• Gray
• More common in medium to deeper skin tones
❤️ PIE (Post-Inflammatory Erythema) is caused by damaged or dilated blood vessels. These marks are usually:
• Pink
• Red
• Purple
• More common in lighter skin tones
If you’re dealing with PIH…
Look for ingredients like:
✨ Vitamin C
✨ Azelaic Acid
✨ Tranexamic Acid
✨ Alpha Arbutin
✨ Kojic Acid
✨ Niacinamide
If you’re dealing with PIE…
Focus on calming inflammation with:
🌿 Azelaic Acid
🌿 Centella Asiatica
🌿 Niacinamide
🌿 Daily sunscreen
The good news?
Both conditions can improve but neither disappears overnight.
Progress comes from:
✔️ Daily sunscreen
✔️ Consistency
✔️ Patience
✔️ Using the right ingredients for the type of mark you actually have
One of the most important things I’ve learned on my own skincare journey is that correctly identifying your skin concern saves you months of frustration and money spent on products that weren’t designed for your issue.
Remember: not every dark or colored mark after acne is the same.
💬 Question: Which one are you dealing with right now PIH, PIE, or maybe both?
Understanding the nuances between PIH and PIE truly transformed my approach to skincare. For a long time, I struggled with persistent acne marks that didn't seem to improve no matter what products I used. I realized that confusing PIH, which are brown to gray spots caused by excess melanin, with PIE, the pink or red marks from blood vessel damage, was causing me to waste time and money. What helped the most was focusing on the right ingredients. For my PIH, I incorporated Vitamin C and Niacinamide, which helped brighten and even out my skin tone gradually. However, when I noticed red patches that lingered, switching to calming ingredients like Centella Asiatica and diligent daily sunscreen use made a huge difference in reducing inflammation and preventing further damage. Another important lesson is patience — neither PIH nor PIE fades overnight. Consistency in using sunscreen every day paired with suitable active ingredients is key. Over time, these strategies noticeably improved my skin's appearance without harsh treatments. I also found that understanding my skin tone mattered a lot since PIH usually affects medium to deeper skin tones more prominently, while PIE tends to be more common in lighter skin types. This insight helped guide my choice of products more effectively. In summary, accurately identifying the type of post-acne mark is essential. Tailoring your skincare routine to specifically target either melanin overproduction or inflamed blood vessels not only speeds up improvement but also saves you from unnecessary irritation. If you’re dealing with both PIH and PIE, combining brightening agents with soothing ingredients and never skipping your sunscreen routine can offer balanced care and visible results.