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The greenest most zero-waste option when it comes to stink-free pits isn't an invisible solid—it's invisible, period. No deodorant is the most eco-friendly deodorant because you're not creating any plastic waste from the stick's casing, and you're not taking any scary health risks. Most conventional antiperspirant sticks and sprays contain aluminum compounds—which help in reducing sweat and smelly odors—but have also been linked to Alzheimer's disease and breast cancer.

But if braving summer's sweltering sweaty months sans the fresh pit protection isn't an option, here's the next best green alternative thanks to scoochmaroo over at Instructables.

DIY All-Natural Deodorant

1. Mix together ¼ cup of cornstarch with ¼ cup of baking soda

2. Optional: add your choice of essential oils if you'd like your deodorant scented

3. Add 2 tbsp. of coconut oil and a few drops of skin-softening, vitamin E

4. Blend everything together until it form a silky mass

5. Pack the mix into an old deodorant stick casing

6. Get creative and create your own clever label to stick on the front of your homemade odor-eater.

For more detailed instructions, click over to the complete Instructable.

::Lifehacker via Instructables