A fan of between 2-5 lashes is placed onto each of your own natural lashes. The lashes used for Russian Volume are finer than the lashes applied for Classic lashes allowing your natural lash to take the weight of more than one lash extension. Russian lashes suit clients who have already a good amount of natural lashes and would like to have a more dramatic, fuller look. They are also suitable for clients with sparser natural lashes as they can help to fill the gaps in between the natural lashes where Classic lashes can't. To keep Russian lashes looking full I recommend an Infill every 3-4 weeks. I use handmade fans. This is important to note as many lash techs are now using pre-made fans which are a lot faster to apply but in my opinion do not last as long and are bulkier looking.