A dermatologist on a major tv makeover show said to give skin six months to 'snap back'. At the end of this time, if it hasn't, it ain't gonna.
Sobering news!
But I totally agree - skin sag/stretch marks are individual. Age, individual skin elasticity, perhaps even general health all figure in this equation. My tummy, thighs and bottom are dimpled, saggy and hanging. That's what often happens after a huge weight loss. I KNOW that neither extra exercise, nor rub-in creams, nor wishful thinking, will solve the problem.