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THE SILKY RESET

Sea Silk Leave-In Hair Serum

Sea Silk Leave-In Hair Serum

For the soft, silky feeling your hair deserves after ocean days.

$83 NZD Β· 100mL
$83 NZD Β· 100mL
Sold out

When your spirit feels full but your hair feels sun-stressed, salty, and a little rough β€” Sea Silk Leave-On Hair Serum restores the softness and shine your hair longs for.

Created for women who love life in the water, this lightweight Korean-crafted serum releases salt-stiff tangles while restoring softness, smoothness, and shine to ocean-exposed strands.

It seals in lightweight nourishment without heaviness or buildup β€” leaving hair soft, luminous, and effortless again.

β€” Caitlin, Diver

"I have tried and used so many other products and it just made my hair frizzier. This stuff is legendary!"
  • Clinically Tested for Sensitive Skin
  • One Bottle Lasts 3-4 Months
  • 1% For The Planet

How To Use

On damp hair
Warm a small amount between your palms and apply through mid-lengths and ends
to improve smoothness and elasticity.

On dry hair
Use sparingly throughout the day to tame frizz and restore shine after exposure
to salt or chlorine.

Routine
Use daily as your leave-in hair recovery step.

Tip
For optimal recovery, apply immediately after showering once hair is
towel-dried.

Good To Know

Thoughtfully formulated without parabens, artificial colourants, mineral oil, or drying alcohols.

Because no artificial colourants are used, slight variations in the natural hue of the formula may occur over time due to the botanical extracts within. This is completely normal and does not affect product performance or safety.

Dermatologist Tested & Approved

Your skin’s safety is our priority.

Salt and sun can leave your skin vulnerable. That’s why our formulas have undergone independent clinical evaluation to ensure they restore your barrier without causing further stress.

βœ“ 0.00 Irritation Score
βœ“ Safe for all skin types
βœ“ Independently tested and verified

Certified by: Dermatocosmetic Skin Science Laboratory (Korea)

Protect the Ocean with Every Breath

Your Purchase, Our Shared Mission

We believe in giving back to the waters that inspire us. Through our partnership with 1% for the Planet, 1% of every sale is dedicated to protecting our blue playground.

Thank you for joining the movement to restore and preserve our oceans for generations to come.

Shop the Ritual

THE RECOVERY COMPLEX

A concentrated blend of five nutrient-rich botanical oils and our MerCellβ„’ Repair Complex delivers deep nourishment to depleted strands. It restores softness, strengthens resilience, and revives healthy-looking shine with every application.

Marine Vegan PDRN
Centella Complex
Triple Aloe Complex

Marine Vegan PDRN, Centella, and Triple Aloe help reinforce weakened strands and support elasticity.

Sea Buckthorn Fruit Oil
Argan Oil
Borage Seed Oil
Green Tea Seed Oil
Moringa Seed Oil

Five omega-rich plant oils smooth, soften, and enhance natural shine.

DIMETHICONE, ISODODECANE, DIMETHICONOL, C12-15 ALKYL BENZOATE, FRAGRANCE, HIPPOPHAERHAMNOIDES FRUIT OIL, HEXYLCINNAMAL, HYDROXYCITRONELLAL, GERANIOL, CITRONELLOL, LIMONENE, ARGANIA SPINOSA KERNELOIL, BORAGO OFFICINALIS SEED OIL, CAMELLIA SINENSIS SEED OIL, MORINGA OLEIFERA SEEDOIL, TOCOPHEROL, WATER,1,2-HEXANEDIOL, BUTYLENE GLYCOL, ALOE BARBADENSIS FLOWER EXTRACT, ALOEBARBADENSIS LEAF EXTRACT,ALOE BARBADENSIS LEAF JUICE, CENTELLA ASIATICA EXTRACT, MELALEUCAALTERNIFOLIA (TEA TREE) LEAF EXTRACT, SODIUM DNA, ASIATIC ACID, ASIATICOSIDE, MADECASSICACID, MADECASSOSIDE

Scent Profile

Top: Grapefruit, Green Apple, Apricot

Heart: Freesia, Rose, Muguet

Base: Musk
  • Mermaids_Secret_Hair_Serum_with_box

    Circular by Design

  • 100% post-consumer recycled bottle (excluding pump).
    Water-separable labels for easy recycling.
    100% recyclable FSC-certified carton.
    Printed with Soy Ink.

FAQs

Shipping

Where do you ship?

We are proud to offer worldwide shipping. We currently ship to the following regions:

  • Oceania: New Zealand & Australia
  • North America: USA & Canada
  • Asia, Europe, and the UK

Can’t find your country at checkout? Please reach out to us via contact form. Our team will be happy to assist with a custom shipping quote for you.

How long will it take to receive my order?

Delivery times depend on your location. Once your order is processed (usually within 1 business day), you can expect the following timeframes.

Please note that deliveries to rural or remote areas will take an additional 2–4 business days.

  • New Zealand: 2–3 business days
  • Australia: 3–10 business days
  • United States, Canada & Asia: 4–10 business days
  • UK & Europe: 5–10 business days

What are your shipping fees?

We offer flat-rate shipping worldwideβ€”including all rural and remote addresses at no extra cost.

  • New Zealand: NZ$5.00
  • Australia: AU$9.90
  • United States, Asia & Canada: US$15.00
  • UK & Europe: US$25.00

Do you offer free shipping?

Yes! We love sharing our products with the world. We offer Free Shipping on all orders over the following amounts:

  • New Zealand: Over NZ$100.00
  • Australia: Over AU$120.00
  • USA, Asia, Canada: Over US$120.00
  • UK & Europe: Over $150

Products & Use

Who are Mermaid’s Secret products designed for?

Our products are designed for those who spend time in the ocean or a pool and want daily recovery for skin and hair after environmental exposure.

Can I use the products every day?

Yes. All products are formulated for daily use as part of a balanced recovery routine.

Do I need to use all three products together?

No. Each product can be used on its own or alongside the skincare and haircare you already use. Together, they simply offer a more complete recovery ritual.

Ingredients & Formulation

Where are your products made?

Our formulas are developed in Korea and manufactured in certified facilities to meet the highest standards of quality and safety.

What is the MerCellβ„’ Repair Complex?

MerCellβ„’ Repair Complex is Mermaid’s Secret’s signature recovery blend designed for skin and hair exposed to salt, sun, and wind. It combines Marine Plant PDRN, Centella (Cica), and Triple Aloe Complex to help calm heat-stressed skin, support the barrier, and restore softness and hydration after ocean exposure.

Is Mermaid’s Secret suitable for sensitive skin?

Yes. Mermaid's Secret is designed with sensitive, ocean-exposed skin in mind. Our formulas are built around calming ingredients β€” including Centella (Cica) and Triple Aloe Complex β€” to soothe and restore skin after salt, sun, and wind exposure.

All products have been independently tested and clinically evaluated for skin irritation, and confirmed non-irritating β€” even for sensitive skin.

  • Primary Dermal Irritation Test – Non-irritating
  • Primary Dermal Irritation Test on Sensitive Skin – Non-irritating

Sustainability & Packaging

What kind of packaging do you use?

Our packaging uses 50–100% post-consumer recycled plastic, FSC-certified paper, soy-based inks, and water-separable labels to support cleaner recycling streams

Are you affiliated with any environmental initiatives

Yes. Mermaid’s Secret is a proud member of 1% for the Planet, contributing to environmental causes through our sales.

Orders & Support

How do I apply a promo code to my order?

Enter your promo code in the β€œDiscount” box at checkout. Only one promo code can be applied per order. Promo codes cannot be added after an order is placed and have no cash value.

How do I check my order status?

Once your order ships, you will receive a shipping confirmation email with a tracking number. Please allow up to 24 hours for tracking updates to appear.

Who can I contact if I need help with my order?

For any questions regarding your order, please contact us via our Contact Us Form or directly at hello@mermaidssecret.com. We will response within 1 business day.

How do I check my order status?

Once your order ships, you’ll receive a confirmation email with tracking details.

If you have an account, you can also view your order status by logging in.

I didn’t receive my order confirmation email β€” what should I do?

Please check your spam or promotions folder first.

If you still can’t find it, contact us at hello@mermaidssecret.com and we’ll help you right away.