This totally depends on what your client wants to achieve.
If she is looking for a water-resistant mascara, suggest T. LeClerc's Water Resistant Volume Mascara.
For volume try New CID's i-Flutter, Face Stockholm's Lash Booster or MDMflow's Greater Than Mascara.
To add length to lashes, perhaps suggest T.LeClerc's Mascara Multiplacateur.
For more specific information on these, please vist the 'Academy' in your Stylist Hub to watch our brand videos.