The style you’re after — e.g. dramatic, voluminous, natural, lengthening
• Your eye shape and size
• Your eyelids — e.g. monolids and hooded eyelids may not suit all styles
• Any allergies or sensitivities
• Whether you want vegan/cruelty-free lashes
• The size of the lash band — thicker bands tend to peel away from the lash line so may require extra glue.