Police are searching for a man who exposed himself to women in Lilydale on two consecutive Sundays last month.

In the first instance, the man pulled down his tracksuit pants and exposed himself to a woman walking on the Lilydale to Warburton Rail Trail, near David Road in Lilydale, about 9.15am on Sunday, August 21.

The man police would like to talk to over the Lilydale flashings. Credit:Victoria Police

The following week, he struck again, exposing himself to a cyclist near the Mount Evelyn skate park about 8.15am.

He is described as being in his early 20s, unshaven and with a mop of black hair.