Eyelash Cleansing Concentrate is so concentrated and low in impurities that it can also be called a serum. Simply mix it with distilled water to make an appropriately concentrated eyelash shampoo. Economical and easy to use. | AuReve Eyelash Cleansing Concentrate is designed to create a rich lathering lash bath shampoo that removes oils, smudges, and cosmetic residue from the lashes, face, and under-eye area for longer lasting lashes! | Directions Mix 5 ml of serum and 55 ml of distilled water in the ratio of 1:11 in a 60 ml shampoo bottle and shake well. Take care to mix in the correct ratio.In addition, the product comes with a small cup with a graduated scale for you to dispense your eyelash shampoo. | AuReve Lash Shampoo is oil, paraben and sulfate free, gentle and safe. An indispensable tool for professional salon lash treatments. It does not produce allergic reactions. Professionally tested, the shampoo itself is safe and non-irritating, easy to use and safe to use in home life. | We guarantee the high quality of our products, if you have any questions or suggestions, please feel free to contact us, we will provide you with the best solution within 24 hours. Customer satisfaction is our only goal.