选择好的爽肤水。 使用增加胶原蛋白的护肤产品。 用化妆品强调下巴。 考虑吸脂手术。

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
A great facial skin toner will prevent skin from sagging, meaning your face (and jaw) looking their tightest. Any buildup of excess dead skin flakes will rob your face of its natural vibrance and definition, so it's necessary to keep all of that under control if you're wanting a truly chiselled jawline. Aim to get an astringent toner, as these tend to be the best when it comes to skin tightening. Collagen is the active ingredient in the skin that keeps the skin tight. Some cleansers and toners e