The Barrier Serum For Outdoor Hair

Your color, curls, and extensions — protected from UV, chlorine, salt water, and cold weather before damage happens.
Risk-free 90-day returns. Free shipping on orders $80+.
 SHOP HAIRBLOCK

Traditional haircare was built for the bathroom sink, not the outdoors. HairBlock is the first clean barrier serum that protects your hair before damage happens — keeping color vibrant, curls defined, and extensions intact no matter what the elements throw at you. Focus on the adventure, not the aftercare.

WHAT PEOPLE ARE SAYING

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How It Works

Our Customer Go-To Outdoor Barrier Serum

HairBlock is a silky, non-greasy barrier serum that helps protect hair from sun, salt, chlorine, and cold weather — locking in moisture and shine for whatever the day throws your way.

Visible Results

Softer, smoother, more resilient hair

Performance-Grade

CitroComplex® hydrates, strengthens, and shields hair from 90% of heat and UV damage

Scalp Shield

Protects scalp from UV, cold air, dryness, and daily wear — without the buildup

See How HairBlock Holds Up Outdoors →
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Our Mission

MIA aims to empower better, more frequent outdoor experiences, starting with haircare that moves with you. From sun to salt to winter air, our hair and scalp faces it all. We create texture-friendly, outdoor-ready formulas that help your hair thrive through every adventure.

Texture-Inclusive

Because curls, coils, waves — and everything in between — deserve protection outdoors

Clean, Vegan & Reef-Compliant

Formulated with you + the planet in mind

Small Batch, Chemist-Made

Real science. Real results. No shortcuts.
Two clear bottles with labels on a wooden surface

Your Best Hair Days Outdoors Start Today

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