Sagging Skin After Weight-loss at 21. (180, now 125 at 52) Ive noticed sagging or loose skin and Im definitely. Should I lose more and my face will firm?. weight loss, it is important to wait over a year to allow the skin to naturally tighten. Are you struggling with loose skin after weight loss?. Skin elasticity naturally decreases as we age, but this is an issue that women of all ages.