It lasts longer than other deodorants: A single BioRock. Crystal deodorant can last for more than a year of daily use. Goes with any perfume: BioRock. provides 24 hours of effective protection against sweat odor. Our Natural Mineral Deodorant is fragrance-free and therefore it can be combined with any perfume. Save your skin and the planet: BioRock. offers a sustainable and long-lasting solution for your skin and the planet. It is unscented and hypoallergenic, made from Potassium Alum rock crystals, also known as “Tawas” crystals, sourced from ancient mines. No Stains, No Residue: Our mineral salt deodorant is non-sticky, non-staining, and leaves no white residue. It leaves no trace or white marks on clothes or skin. And it does not leave the skin feeling sticky or oily. Safe and simple ecological deodorant: Aluminum, Paraben, Silicone, Alcohol, Phthalates, Synthetic Preservative, Fragrance, and Colorant Free. Gentle and effective mineral odor protection: Prevents body odor by creating an invisible protective barrier on the skin to block odor before it starts and keeps you feeling fresh, confident, and odor-free for up to 24 hours.