A prescription is required to purchase Latisse, according to the product's website. Although the eyelash-lengthening product has been sold in salons and online to those without prescriptions, there are risks associated with acquiring Latisse without first consulting with a doctor, advises ConsumerReports.org.
Latisse is a manmade prostaglandin used to lengthen and thicken eyelashes, according to Drugs.com. Patients apply the product daily to the skin of the eyelid, and it may take up to 16 weeks to produce longer lashes. Side effects of Latisse include itching, redness and skin darkening. Due to the possible adverse reactions and interactions with other drugs, patients should only use Latisse under doctor supervision.