Slender glass tubes holding 12 mls of hydrosol. Hydrosol is the water that remains after distilling the essential oil out of the plant. It retains many characteristics of the original essential oil. In this fragrance free world, sometimes we just need to lift our spirits with the faintest whiff of scent. A quick spritz will refresh body and soul. Four choices: Rose Geranium (rosy floral), Lavender, Sandalwood (faintly spicy), and Neroli (orange blossom, a tropical floral.)