Removing all excess body fat does not guarantee that loose skin will tighten. Individuals who lose significant weight, such as through gastric bypass surgery, often find that they require surgical intervention to remove excess skin, as it may not retract on its own. The discussion highlights concerns about the potential for misinformation regarding body fat and skin elasticity, suggesting that extreme weight loss could lead to unhealthy outcomes. For younger individuals, like those around 20, there is a possibility that minor loose skin may bounce back over time, but the extent of skin elasticity varies. The conversation also touches on how skin can stretch and shrink based on internal factors, such as during pregnancy, indicating that the skin's ability to recover is complex and not solely dependent on fat removal.