Nail Strengthener

nail strengthener hand swatch on fair skin tone

nail strengthener hand swatch on fair skin tone holding sienna bottle

nail strengthener hand swatch on medium skin tone

nail strengthener hand swatch on medium skin tone holding sienna bottle

nail strengthener hand swatch on medium skin tone holding sienna bottle close up

nail strengthener hand swatch on dark skin tone holding sienna bottle

nail strengthener glass bottle with 5 star review

Nail Strengthener 10ml – .34 fl oz. Nail Polish

Clear Coat + Base Coat. Level up your self-care routine with our award winning nail strengthener, formulated with AHA to rejuvenate brittle nails. It gently removes expired keratin, balances pH, and improves oil absorption for stronger nails. It will give you the extra support needed to make your nails long and strong. It can be used as a base coat to help your nail polish adhere to the natural nail and as a clear coat for a gorgeous, glossy, nude nail look! All while protecting your nail bed. #powerful

Select a Skin Tone:

$24.00

Safe & secure checkout

Sienna nail polish is proudly ethically made, certified 100% vegan & cruelty free

Our exclusive formula is a world first with no nano-particles

Everything we do is made to be as environmentally friendly

Dispatched within 24 hours

Free US Shipping Over $75

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.

Apply two coats of the nail strengthener on clean, dry nails twice a week, removing between applications.
Make sure to remove it with an acetone free nail polish remover so you dont undo all of your hard work.

*Softer nails may require more frequent application. Our nail strengthener can also be applied as a base coat to help your nail polish adhere to the natural nail while protecting your nail bed!

Butyl Acetate (biosourced: derived from sugar cane residue or manioc), Ethyl Acetate (biosourced: derived from sugar cane), Nitrocellulose (partially biosourced: derived from cotton), Acetyl Tributyl Citrate (partially biosourced: derived from corn), Adipic Acid/Neopentyl Glycol/Trimellitic Anhydride Copolymer, Isopropyl Alcohol, Silica, Trimethylsiloxysilicate, Sucrose Acetate Isobutyrate, Dimethicone, Water (Aqua), Acrylates Copolymer, Glycolic Acid, Dimethyl Sulfone, Dimethyl Oxobenzo Dioxasilane, Titanium Dioxide (CI 77891)

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!

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.

More To Love

Expand your collection with these must-have Sienna picks.

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 $75, shipped through Australia Post. 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 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.

Glitter has a significant environmental impact, and we stand against that. Microplastics from glitter have been documented to harm marine life, causing seabirds to die of starvation when ingested. Sienna was the first nail polish brand globally to ban glitter from production to address the environmental concerns.

Our nail polish allows air to permeate through the surface. Scientifically tested to ensure osmosis occurs all the way to the nail bed.

Please note that this osmosis is not visible to the naked eye, and
commonly used coffee paper saturation tests are not accurate. Osmosis happens through gently permeating the nail polish film.

Nail Strengthener