As a follow up to my comment, fine lines may take a bit longer between 2 to 3 weeks on average.
My use on day 3 showed little improvements, however, I could see real improvement after roughly 11 days.
You also need to realize that using red light for fine lines also improves other facial and cosmetic features of your face; finer skin, pores, wrinkles and so much more.
I hope that was helpful.