Forehead Restylane/Yvoir/Perfecta was right . I honestly think Restylane lasting 2 years is a bit of a lie. Each part is different, but I tend to use a lot of eyebrow muscles, so the upper eyebrows faded the fastest, and the edge of the forehead seems to have lasted about a year. It definitely seemed to fall out quickly, and the particles were fine (?), so there was less pain when hit. Perfecta took just a few days, but the particles are thick, so they say it lasts for a long time . I 'll have to keep an eye on it . It 's definitely filled up so you look young when you're expressionless, but when you smile, you don't have any wrinkles at all, so it's very awkward . I'm not going to do fillers anymore~