Plant based formula

cruelty-free

Fast shipping

Secure checkout

Plant based formula

cruelty-free

Fast shipping

Secure checkout

Horizon Quin

Horizon represents our collective longing for peace and stillness—at home, and across the world. These five shades are a tribute to unity in uncertain times, inspired by oceans, skies, and cosmic light. Each polish is a quiet prayer for serenity—a soft step toward healing, togetherness, and clarity.

This collection is a reminder that even when the world feels vast and fractured, we are still connected—under the same sky, holding the same hopes for our loved ones and for humankind.

Includes 5 x 10ml – .34 fl oz.
Bonsoir – Sapphire Blue Shimmer
Unity – Peacock Blue-green Shimmer
Stillness – Calm, Midtone Turquoise Crème
Breathe – Light Turquoise Creme
Skye - Moonstone Blue Shimmer

Select a Skin Tone:

Regular price $145.00 Sale price$121.00 Save 17%
/
Tax included.

Safe & secure checkout

  • 100% Vegan, Cruelty-Free & Benzo-free

Dispatched within 24 hours

Free Aus Shipping Over $100

Countless Happy Customers

Natural ingredients
Derived from Sugarcane, Cassava, Cotton and Corn.

Innovative, cleanest formula possible
Our exclusive formula is a world first with no nano-particles, no benzophenone 1 and none of the standard toxic ingredients everyone says no to!

World friendly products
From natural ingredients to the organic timber on our bottles; everything we do is made to be as environmentally friendly as possible.

  1. Start with a well prepped nail by using a single coat of either base coat or nail strengthener.
  2. Next, with your choice of colour, swipe one side of the brush on the inside of the bottle neck to remove excess nail polish.
  3. Place your brush with the drop of polish at the base of your nail, near the cuticle. Swipe it in a straight line from the base to the tip of the nail.
  4. Return to the base of the nail and gently swipe to each side of the initial stripe, covering the nail fully.
  5. Repeat the process on each nail.
  6. For full coverage apply two to three coats of colour.
  7. Finish with your choice of glossy or matte top coat.
  8. Voila! You achieved nail polish glory.

All colours: Ethyl Acetate, Butyl Acetate, Nitrocellulose, Adipic Acid/neopentyl Glycol/trimellitic Anhydride Copolymer, Acetyl Tributyl Citrate, Alcohol, Stearalkonium Bentonite, Sucrose Acetate Isobutyrate, Acrylates Copolymer, Isopropyl Alcohol, N-butyl Alcohol, Diacetone Alcohol, Phosphoric Acid, Dimethicone, Trimethylsiloxysilicate.

May Contain +/-: Mica, CI 15850, CI 77499, CI 77891, CI 15880, CI 77491, CI 77510, CI 19140, CI 77000, CI 60725, CI 47005, CI 47000, CI 42090, CI 77007.

Nails that Radiate, the Healthy Way

Treating you and the planet with the utmost care

Natural ingredients, No Nasties

We use plant-based ingredients with minimal waste, offer 100% recyclable packaging, and run an in-house recycling program.

Vegan & Kind to Animals

Being vegan and cruelty-free covers all bases. No animal products in our polish, and definitely no animal testing, we’re committed to both!

“The horizon leans forward, offering you space to place new steps of change.”

— Maya Angelou

Cleanest Formula Possible

The first of its kind worldwide, with no nano-particles, benzophenone 1, or any of the harmful ingredients everyone avoids.

By Nail Lovers, for Nail Lovers

40 researchers exclusively specialised in nail polish work their magic every day in our sustainable lab to produce your favourite Sienna shades.

Frequently Asked Questions

Find the answers you’re looking for right here.

Orders are typically dispatched within 24 hours (business days) via Australia Post and DHL Express International. We aim to process orders within 1-4 business days, and delivery times may vary by destination. 

Domestic shipping is free for orders over $85, shipped through Australia Post.

International Shipping is free for orders over AUD $185, and AUD $55 for all other orders, shipped through DHL.

USA orders can be made directly through our local US website, and domestic shipping rates apply. 

Additional details are available on our dedicated shipping page.

The ingredients list is on each product page under the ‘Ingredients’ tab. You can also view it on the barcode label attached to the bottle. Simply peel the outside label to reveal.

Sienna is a conventional vegan nail polish formula. It offers a cleaner and more natural option compared to other brands.

Join our Insta Journey at @sienna.co

100% VEGAN & CRUELTY-FREE

PLANT-BASED INGREDIENTS

NON-TOXIC & NANO-FREE

INCLUSIVE FOR EVERYONE

100% VEGAN & CRUELTY-FREE

PLANT-BASED INGREDIENTS

NON-TOXIC & NANO-FREE

INCLUSIVE FOR EVERYONE