Perhaps the most important factor that determines get old is genetic. The person who has a good genetic structure gets old late even if the environmental conditions are bad. Apart from this, racial features are important. Thick-skinned Mediterranean breeds have more gravitational sags, while thin-skinned blond Northern Europeans have more pronounced wrinkles.
The factors that we can control about ageing are regular sleep, good nutrition, avoiding the sun, consuming plenty of fluids, not smoking, not consuming much alcohol, avoiding tension and sadness, living in a clean environment, avoiding excessive makeup, regular moisturizing and skincare products to use.