If you'd like to use a gentler, plastic-free deodorant, but are worried about performance, I'd highly recommend this crystal deodorant stick.
The crystal is made of naturally antibacterial potassium. I use this deodorant every day and it lasts a long time - two years and counting so far!
To use the stick, all you need to do is wet it and apply it directly to your underarms. A very thin layer will remain on your skin. From there, it slows down the production of smelly bacteria and lets your skin perspire naturally. Make sure to let your deodorant stick dry between uses - I just leave it with the cap off.
This deodorant is vegan, hypo-allergenic and fragrance free. It's cruelty free and doesn't contain aluminium chlorides. It comes in a cork case which protects the crystal and helps it last longer. Cork harvesting helps locals make a living in one of the most biodiverse habitats in Portugal.
Each crystal deodorant stick weighs 120g.