Clean + Conscious Awards 2024. Best Nail Product. Celebrating products in Australia & NZ which are Non-Toxic, Ethical, Sustainable and Socially Responsible.

Sienna – Nail Strengthener

GOLD + EDITOR'S CHOICE
Best Nail Product 2024

$34.00

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Sienna Nail Strengthener is a top-selling product designed to support weak nails. Formulated with MSM, AHA and Organic Silicium in an organically derived plant base, it is proven to help strengthen and nourish nails.

Clean Ingredients / Materials
Formulated with excellent clean ingredients.
Sienna is both Vegan and Cruelty Free, certified by Vegan Society, PETA and Cruelty Free International. They do not use glitter due to its harmful effects on the environment and use Child Labour Free mica sourced from a brand with strict anti child labour policies. The brand pays its staff above award, allows working from home and uses sustainable energy and fuels in its operations. They have plant based, organically derived ingredients and manufacture both in France and Australia with the same ingredients. The French manufacturer uses green energy and manufacturing processes.
Sienna prioritises sustainability by using plant-based ingredients, non-native timber offcuts from furniture production for their lids instead of plastic and by operating on 100% renewable energy in their facilities. They are B-corp certified with a high score of 100.4, well above the median for other brands. Additionally, they are Vegan and Cruelty Free certified by multiple organisations and avoid using glitter due to its detrimental effects on the environment.
Sienna is dedicated to ensuring their products are child labour free, particularly in the Mica industry. They prioritise their staff by paying them above award, showing respect and appreciation. Even with slim profit margins, they regularly donate to charities. Sienna uses their platform to advocate for marginalised societal groups and predominantly employs women, with 80% of their staff being female. They are also certified to uphold their commitment to social responsibility.

Expert Reviews

Elise Wilson


It sunk in and dried quickly and I liked the natural sheen it also gave my bare nails! I also like that it’s cruelty free and uses plant-based ingredients.

Courtney Dow


I have pretty weak nails that never seem to grow and I saw results in a short time of using this product. I like knowing that I can be using a strengthening product that is free from the harmful chemicals I usually try to avoid. I love Sienna’s commitment to natural and safe ingredients, while ensuring their manufacturing and production practices adhere to their ethical values. Transparency on where their ingredients are sourced and that they are only working with suppliers who also meet their standards means as consumers we can feel a lot of trust for this brand.

Fiona Morouco


The Sienna Nail Strengthener is a great option to give your nails a shine. I like that it doesn’t have as strong a nail polish smell as other ones I have tried. I also love that the business is B-Corp certified and that the products are child labour free.

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