Post Inflammatory Hyperpigmentation (PIH)

PIH, also known as post-inflammatory hyperpigmentation, appears as dark marks or patches left behind after breakouts, irritation, inflammation, or skin injury. These marks can affect all skin tones and may take time to fade without consistent skincare support.

At By Marilyn, we focus on gentle, glow-focused skincare that supports a healthier-looking complexion while helping maintain the skin barrier.

Common Signs of PIH

  • Dark spots after acne or irritation
  • Uneven skin tone
  • Marks left after picking or inflammation
  • Areas of discolouration that linger after healing
  • Skin looking dull or uneven in certain areas

What May Cause PIH?

PIH can be triggered by:

  • Acne and breakouts
  • Skin irritation or inflammation
  • Picking or squeezing spots
  • Harsh skincare products
  • Over-exfoliation
  • Damage to the skin barrier

Our Approach

We believe consistency and gentle care matter most. Our skincare selections focus on:

  • Barrier-supporting hydration
  • Gentle exfoliation support
  • Brightening-focused skincare
  • Skin-soothing ingredients
  • Glow-enhancing routines inspired by K-beauty principles

Patience & Consistency

PIH does not usually fade overnight. A consistent skincare routine focused on hydration, protection, and gentle care can help improve the appearance of uneven skin tone over time.

Explore skincare essentials designed to support brighter, smoother, and more radiant-looking skin.

True Beauty Begins Beneath the Makeup

You don't need to look good only on special days when a makeup artist visits. Your transformation should be daily.

Some people look completely different when they wera makeup - but how is your skin when it's just you? Is it glowing, hydrated, even-toned?

I'm not a dermatologist - I'm your Glow Guide. I teach you how to take control of your skin.

Glow School was created to help you find your own melanin glow - bot by changing who you are, but by nurturing what's already there.

Learn the Glow Method

Glow is more than skin deep - it's confidence, care, and consistency

Hi, I'm Marilyn Laiva, founder of Glow School and creator of the Melanin Glow Concept. Glow School Started with one mission - to help women with melanin-skin feel confident in their natural glow.

But your glow isn't about skincare. It's about how you care for yourself -your skin, your hair, and your mindset.

That's why Glow School is expanding into more than K-beauty. We're creating workshops, books, and tools that help you:

  • Build confidence from within
  • Create daily rituals that nurture your skin
  • Care for your hair with love and science

"Confidence is the best glow you can ever wear"

Shop Confidence Kits

Barrier-first cleansing for all skin types

Learn how to cleanse your skin gently and effectively—without damaging your skin barrier.

Download the Cleanser Guide