How long does a collagen care procedure usually take?

Since it's May, there are tons of weddings, so I've been attending as a guest every weekend. It really upsets me because whenever I meet old classmates I haven't seen in a while, my skin looks the most lacking in elasticity and looks dull compared to everyone else's. Everyone else seems to have glowing skin, so I'm planning to visit a dermatologist to get some proper care. I've heard that collagen care, which firms up skin from deep within, is the surefire way to achieve results. Will getting this really give me that smooth, glowing shine like a peeled egg? Since I'm a working professional, I want to stop by the clinic quickly after work, so I'm curious how long the entire collagen treatment takes, from the anesthesia to the finishing mask. Also, I want to know if I'll need to wear a mask to work the next day because of severe bruising or swelling. If anyone has tried collagen care to get beautiful quickly without swelling, I would be so grateful if you could share the details about the branch and the doctor!