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HairBlock — Multi-Benefit Barrier Serum for Sun, Salt, Chlorine, & Cold Weather
HairBlock — Multi-Benefit Barrier Serum for Sun, Salt, Chlorine, & Cold Weather

HairBlock

Outdoor-Proof Silky Barrier Serum

Lightweight serum that shields hair and scalp from sun, salt, chlorine, and cold weather

(7) reviews

Five stars, every review — guaranteed returns if it's not love!

$24.00

Your Hair’s New Adventure Essential

HairBlock is a lightweight, oil-based barrier serum designed to protect hair + scalp during outdoor exposure — from sun and sweat to chlorine, saltwater, and cold air.

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 locks in moisture + adds natural shine
softens + defines texture
shields against sun, salt, chlorine + harsh weather
absorbs fast — no greasy buildup  
clean, high-performance formula

Clean + vegan + cruelty-free + reef-compliant

Apply 3–4 pumps as the final step in your routine before heading outside. Perfect for beach days, poolside hangs, trail runs, or any moment in motion.
Size

Secure checkout. Free shipping over $65. Ships in 3–5 days.

Real people, real protection.

Ready to protect your next adventure? → Get HairBlock.

Active ingredients

CitroComplex

A next-gen oil complex that does the most. It blends Citropol® technology with plant-based oils to help hydrate, smooth, and add shine - while also improving manageability. Bonus: it defends against UVA/UVB rays and heat damage, making it great for styling on sunny days

Clinically tested to reduce 90% of hair damage (split ends + breakage), compared to just 60% with ordinary formulas.

UVA + UVB Filters

Lightweight, reef-compliant protection that defends against sun exposure with zero residue or white cast on hair or scalp

Radish Seed Extract + Jojoba Oil

Our moisture-locking duo. These barrier oils glides through hair, absorbs fast, and leaves strands smoother, stronger, and shinier. Rich in antioxidants and fatty acids, they help protect against UV damage, pollution, and dryness
All Ingredients

RAPHANUS SATIVUS SEED EXTRACT, CAPRYLIC/CAPRIC TRIGLYCERIDE, HYDROGENATED ETHYLHEXYL OLIVATE, HYDROGENATED POLYISOBUTENE,OCTOCRYLENE, SIMMONDSIA CHINENSIS SEED OIL, ETHYLHEXYL SALICYLATE, POLYCITRONELLOL ACETATE, HYDROGENATED OLIVE OILUNSAPONIFIABLES, UNDECANE, CRAMBE ABYSSINICA SEED OIL, RICINUS COMMUNIS SEED OIL, BUTYL METHOXYDIBENZOYLMETHANE, HELIANTHUSANNUUS (SUNFLOWER) SEED OIL, TRIDECANE, TOCOPHEROL, TOCOPHERYL ACETATE, FRAGRANCE, LINALOOL, LINALYL ACETATE, LIMONENE, CITRUSAURANTIUM PEEL OIL, CITRUS AURANTIUM DULCIS OIL, GERANIOL, CITRUS AURANTIUM BERGAMIA PEEL OIL, CITRUS AURANTIUM FLOWER OIL,CITRUS RETICULATA LEAF OIL, NEROL, SALVIA SCLAREA OIL, AMYL CINNAMAL, CANANGA ODORATA FLOWER EXTRACT
Person lying on grass with a bottle of alcohol nearby

Scalp Shield

Helps minimize damage from sun, chlorine, and saltwater
Close-up of wavy brown hair

Moisture-Locking

CitroComplex® hydrates hair while protecting it from heat & UVA-UVB damage
Woman with an afro in a pink sleeveless top standing outdoors with grass and sky in the background

Texture-Friendly

Softer, less brittle hair
after outdoor exposure
Adventure TimeBeach TimeLounge Time

When To Go MIA

There’s no wrong time to protect your hair. Whether you’re chasing adventure, soaking up the sun, or just taking it easy poolside, HairBlock is made to move with you.

Hiking, biking, road-tripping — wherever the day takes you. HairBlock is your sidekick for soft, glossy strands that can keep up.

Salt, sun, and sand? We’ve got you. Smooth HairBlock on before hitting the shore to lock in moisture and help prevent post-dip dryness.

Because poolside naps and park hangs still count. A quick application keeps your hair hydrated and touchable, no serious effort required.

How To HairBlock

HairBlock is your green light to live life outside — from high-energy adventures to low-key lounging. Whenever the elements are calling, MIA is your move.

Start with damp or dry hair 15-20 minutes prior to exposure. Spray HairBlock into your hands at a safe distance.

Comb through, scrunch, or smooth onto hair and scalp — focus on the ends and any exposed areas. HairBlock is the last step in your styling routine, locking in moisture and shine before you head outside.

Swim, sweat, hike — do your thing. Reapply every 40 to 80 minutes during extended sun or water exposure to keep your strands protected-feeling and glossy.

Frequently asked questions
What’s in HairBlock?

HairBlock is packed with clean, high-performance ingredients that do the heavy lifting without the heaviness. We designed it to lock in moisture, fight breakage, boost shine, and create a silky, invisible shield between your strands and the elements.

HairBlock uses UV filters (Octocrylene, Avobenzone, and Ethylhexyl Salicylate) to further protect your hair from UVA and UVB exposure. We chose these high-performing chemical filters because they’re lightweight, leave no residue, and play nicely with textured hair - unlike some mineral-based alternatives that can leave a white cast or dry the hair out. 
Is HairBlock safe for the environment?

We chose UV filters that are reef-compliant and widely regarded as safer alternatives to banned actives like oxybenzone. Our formula is lightweight, effective, and designed with both your hair and lifestyle in mind - including time spent near the water. That said, we’re keeping a close eye on evolving research and are committed to continuous improvement as cleaner, reef-friendlier innovations become available.
Can I use HairBlock every day?

Absolutely. HairBlock was designed to be part of your daily routine. It’s lightweight, non-greasy, and safe to use every day.
Is HairBlock safe for color-treated or chemically-processed hair?

Yes! HairBlock is safe for color-treated and chemically-processed hair. 
Does HairBlock have a fragrance?

HairBlock has a light, floral plant-based fragrance that is subtle, clean scent, and fades gradually after application.
Which hair types can use HairBlock?

When we set out to create HairBlock, textured hair, (curls, coils, and waves) were at the center of every decision. But as we tested, learned, and received feedback, we realized something: all hair types need and benefit from clean, outdoor-forward protection for both hair and scalp.

HairBlock was made with textured hair in mind - but it works beautifully across the spectrum.