How to strengthen aging skin?

To strengthen aging skin, use products with retinoids or retinol to boost collagen production and increase cell turnover. Apply vitamin C serum daily to protect and strengthen skin structure. Use products containing peptides that signal skin to produce more collagen and elastin. Include niacinamide to strengthen the skin barrier and improve resilience. Protect with broad-spectrum sunscreen daily to prevent further damage. Keep skin moisturized with ceramides and hyaluronic acid. Eat protein-rich foods to provide building blocks for skin repair. Take collagen supplements which may support skin from within. Stay hydrated by drinking enough water. Get adequate sleep for cellular repair. Consider professional treatments like microneedling or radiofrequency that stimulate collagen production. Be patient, as strengthening skin takes several months of consistent care.