Outdoor Haircare, finally

Less dryness, less breakage, and more length retention after every outdoor adventure.

Guaranteed 30-day returns. Free shipping on orders $65+.

The first multi-benefit hair and scalp barrier serum made to protect your texture from the elements. Our clean, chemist-formulated blend adds a soft, protective shield so your hair stays smooth, hydrated, and resilient — no matter the sun, sweat, salt, or cold. Run, ski, hike, swim. Focus on the adventure, not the aftercare.

Loved by 100+ outdoor adventurers and every day on-the-goers

Two bottles of HairBlock Silky Barrier Serum on a white background

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 →

Person in red jacket holding a yellow object on a snowy slope with skiers in the background

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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